Please look in Eschmeyer's Catalog of Fishes for authorships of sections, Families of Fishes (all), and related information.

Species in the genus Trichomycterus: [ 242 ] records

adautoleitei, Trichomycterus (Paracambeva) Costa [W. J. E. M.], Azevedo-Santos [V. M.] & Katz [A. M.] in Costa, Azevedo-Santos, Mattos & Katz 2023:24, Figs. 5E, 6G, 7E, 13 [Fishes v. 8 (no. 4): 206; ref. 40170] Stream tributary of Rio Itaci, a tributary of Rio Sapucaí, Rio Grande drainage, upper Rio Paraná basin, Carmo do Rio Clara municipality, Minas Gerais State, Brazil, 20°54'58"S, 45°56'21"W, elevation about 840 meters. Holotype: UFRJ 13406. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus adautoleitei Costa, Azevedo-Santos & Katz 2023 Current status: Valid as Trichomycterus adautoleitei Costa, Azevedo-Santos & Katz 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Sapucaí subdrainage, middle Rio Grande drainage, upper Paraná River basin, Minas Gerais State, Brazil. Habitat: freshwater.

aguarague, Trichomycterus Fernández [L.] & Osinaga [K.] 2006:386, Figs. 1, 2b, 3b [Environmental Biology of Fishes v. 75; ref. 28738] Provice Gran Chaco, National Park Aguarague, Quebrada Timboycito, a Río Caiguami tributary, Tarija, Bolivia, 21°30'S, 63°60'W, elevation 700-800 meters. Holotype: MNKP 4012. Paratypes: MNKP 4002 (6), 4004 (6, 1 c&s), 4006 (4). Name is a noun in apposition. •Valid as Trichomycterus aguarague Fernández & Osinaga 2006 -- (Ferraris 2007:441 [ref. 29155], Sarmiento et al. 2014:193 [ref. 35004], Fernández & Andreoli Bize 2018:367 [ref. 36232]). Current status: Valid as Trichomycterus aguarague Fernández & Osinaga 2006. Trichomycteridae: Trichomycterinae. Distribution: Aguarague National Park, Paraná River system, Bolivia. Habitat: freshwater.

albinotatus, Trichomycterus Costa [W. J. E. M.] 1992:102, Figs. 1-2 [Revue française d'Aquariologie Herpétologie v. 18 (no. 4) [for 1991]; ref. 19725] Visconde de Maua, 1 kilometer west of Maromba, Rio Preto, Rio Paraiba basin, Rio de Janeiro State, Brazil, elevation above 1,100 meters. Holotype: MZUSP 42312. Paratypes: MNRJ 547 (8), 583 (2, c&s), 593 (4), 594 (1); MZUSP 42315 (3). Type catalog: Ferraris 2007:414 [ref. 29155]. •Valid as Trichomycterus albinotatus Costa 1992 -- (Bizerril 1994:624 [ref. 22673], Burgess & Finley 1996:167 [ref. 22901], de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:414 [ref. 29155], Barbosa & Costa 2010:120 [ref. 30782], Barbosa & Costa 2011:308 [ref. 31672], Barbosa & Costa 2012:81 [ref. 31901], Vilardo et al. 2020:7 [ref. 37847], Costa et al. 2023:164 [ref. 40075], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:557 [ref. 42662]). Current status: Valid as Trichomycterus albinotatus Costa 1992. Trichomycteridae: Trichomycterinae. Distribution: South America: upper course of the Rio Preto, Ribeirão Santa Clara and Córrego das Cruzes drainages, Paraíba do Sul River basin, Rio de Janeiro state (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

alternatum, Pygidium Eigenmann [C. H.] 1917:700 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Rio Doce, near the village Rio Doce, Minas Gerais, Brazil [20°14'41"S, 42°53'45"W]. Holotype: FMNH 58082 [ex CM 7079]. Paratypes: CAS 64575 (4), FMNH 58083 (62). Type catalog: Henn 1928:79 [ref. 12305], Ibarra & Stewart 1987:72 [ref. 12367], Ferraris 2007:414 [ref. 29155]. •Valid as Trichomycterus alternatus (Eigenmann 1917) -- (Burgess 1989:321 [ref. 12860] as alternatum, Bizerril 1994:623 [ref. 22673], Miquelarena & Fernández 2000:44 [ref. 27633], de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Wosiacki & Garavello 2004:5 [ref. 27649], Triques & Vono 2004:170 [ref. 27798], Bockmann et al. 2004:227 [ref. 27855], Alencar & Costa 2004:3 [ref. 27991], Ferraris 2007:414 [ref. 29155], Barbosa & Costa 2010:120 [ref. 30782], Barbosa & Costa 2011:308 [ref. 31672], Barbosa & Costa 2012:156 [ref. 32045], Barbosa 2013:274 [ref. 33106], García-Melo et al. 2016:238 [ref. 34471], Reis & de Pinna 2019:104 [ref. 36632], Donin et al. 2020:10 [ref. 37395], Reis & de Pinna 2022:14 [ref. 39360], Costa et al. 2022:513 [ref. 39820], Costa et al. 2023:12 [ref. 40511], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus alternatus (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: South America: Atlantic coastal river basins from Rio Doce to Rio Paranaguá, Minas Gerais (Brazil). Habitat: freshwater.

alterum, Pygidium Marini [T. L.], Nichols [J. T.] & LaMonte [F. R.] 1933:2, Fig. 2 [American Museum Novitates No. 618; ref. 2889] La Rioja, Río de Los Sauces, Argentina. Holotype: AMNH 12241. Paratypes: AMNH 12242 (3). Type catalog: Ferraris 2007:415 [ref. 29155]. •Valid as Trichomycterus alterum (Marini, Nichols & LaMonte 1933) -- (Arratia & Menu-Marque 1984:515 [ref. 8254], Burgess 1989:321 [ref. 12860], Fernández 2000:32 [ref. 26195]). •Valid as Trichomycterus alterus (Marini, Nichols & LaMonte 1933) -- (Fernández 2000:352 [ref. 25077], Fernández & Vari 2002:743 [ref. 26231], López et al. 2002:60 [ref. 26808], de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], López et al. 2003:39 [ref. 27366], Menni 2004:82 [ref. 28131], Fernández & Osinaga 2006:387 [ref. 28738], Ferraris 2007:415 [ref. 29155], Fernández & Vari 2009:198 [ref. 30062], Sarmiento et al. 2014:193 [ref. 35004], Fernández et al. 2015:9 [ref. 35041], Mirande & Koerber 2015:37 [ref. 35117], Fernández & Andreoli Bize 2018:366 [ref. 36232]). Current status: Valid as Trichomycterus alterus (Marini, Nichols & LaMonte 1933). Trichomycteridae: Trichomycterinae. Distribution: Argentina and Bolivia. Habitat: freshwater.

altipombensis, Trichomycterus Costa [W. J. E. M.], Katz [A. M.], Vilardo [P. J.] & Mattos [J. L. O.] in Costa, Mattos, Vilardo, Amorim & Katz 2022:509, Figs. 2F, 4F, 18-19 [Taxonomy v. 2; ref. 39820] Upper Rio Pomba, Rio Paraíba do Sul basin, Santa Bárbara do Tigúrio Municipality, Minas Gerais State, Brazil, 21°14'06"S, 43°30'51"W, elevation about 600 meters. Holotype: UFRJ 13211. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus altipombensis Costa, Katz, Vilardo & Mattos 2022 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus altipombensis Costa, Katz, Vilardo & Mattos 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Pomba drainage, Paraíba do Sul River basin (Minas Gerais State, Brazil). Habitat: freshwater.

anaisae, Trichomycterus Katz [A. M.] & Costa [W. J. E. M.] in Costa & Katz 2021:6, Figs. 2A, 2K, 3A-B, 4A, 4K [Systematics and Biodiversity v. 19 (no. 6); ref. 38252] Córrego do Gregório, a tributary to Córrego da Mutuca, affluent of Ribeirão dos Cristais, Rio das Velhas drainage, Rio São Francisco basin, Município de Nova Lima, Estado de Minas Gerais, Brazil, 20°00'38"S, 43°56'33"W, elevation 1,050 meters. Holotype: UFRJ 12678. Paratypes: CICCAA, MZUSP, UFRJ. •Valid as Trichomycterus anaisae Katz & Costa 2021 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus anaisae Katz & Costa 2021. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Correga da Mutuca drainage, Rio das Velhas drainage, Rio São Francisco basin (Minas Gerais, Brazil). Habitat: freshwater.

antiquus, Trichomycterus (Paracambeva) Costa [W. J. E. M.], Feltrin [C. R. M.], Mattos [J. L. O.] & Katz [A. M.] 2024:758, Figs. 1, 2A, 3 [Zoosystematics and Evolution v. 100 (no. 2); ref. 41213] Rio Santa Bárbara, Rio do Peixe drainage, Rio Paraíba do Sul basin, São Francisco Xavier, Serra dos Poncianos, part of the Serra da Mantiqueira, Município de São José dos Campos, São Paulo State, Brazil, 22°51'47"S, 45°54'60"W, elevation about 980 meters. Holotype: UFRJ 13674. Paratypes: UFRJ. •Valid as Trichomycterus antiquus Costa, Feltrin, Mattos & Katz 2024. Current status: Valid as Trichomycterus antiquus Costa, Feltrin, Mattos & Katz 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio do Peixe drainage, Rio Paraíba do Sul basin, southeastern Brazil. Habitat: freshwater.

araxa, Trichomycterus Costa [W. J. E. M.], Mattos [J. L. O.], Sampaio [W. M. S.], Giongo [P.], Almeida [F. B. de] & Katz [A. M.] 2022:156, Figs. 4-7, 8A-C [Zoosystematics and Evolution v. 98 (no. 1); ref. 39290] Stream tributary to Rio Capivara, Rio Quebra Anzol subdrainage, Rio Araguari drainage, Rio Paranaíba basin, Reserva Particular do Patrimônio Natural São Sebastião, Araxá Municipality, Brazil, 19°40'26"S, 47°02'24"W, elevation ca. 970 meters. Holotype: UFRJ 7029. Paratypes: CICCAA, MZUSP, UFRJ. Plus additional non-type material. •Valid as Trichomycterus araxa Costa, Mattos, Sampaio, Giongo, Almeida & Katz 2022 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus araxa Costa, Mattos, Sampaio, Giongo, Almeida & Katz 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Quebra Anzol drainage, Rio Paranaíba basin, upper Paraná River basin (Minas Gerais State, Brazil). Habitat: freshwater.

ardilai, Trichomycterus Ardila Rodríguez [C. A.] 2023:7, Figs. 1-2, 5A, 6A, 7A, 8A, 9A [Barranquilla, Departamento del Atlántico No. 90; ref. 40647] Quebrada La Paramera, afluente del Río Chucurí, cuenca del Río Magdalena, municipio de San Vicente de Chucurí, Departamento de Santander, Colombia, elevation 692 meters. Holotype: CAR 1000. Paratypes: CAR 993 (8). •Valid as Trichomycterus ardilai Ardila Rodríguez 2023. Current status: Valid as Trichomycterus ardilai Ardila Rodríguez 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Chucurí drainage, Magdalena basin, Santander, Colombia. Habitat: freshwater.

areolatus, Trichomycterus Valenciennes [A.] in Cuvier & Valenciennes 1846:492 [Histoire naturelle des poissons v. 18; ref. 1011] Río San Jago, Santiago, Chile. Syntypes: MNHN 0000-3167 (3), A-6310 (2). Type catalog: Bertin & Estève 1950:63 [ref. 19575], Ferraris 2007:415 [ref. 29155]. •Valid as Harcheria areolata (Valenciennes 1846) -- (Koerber et al. 2024:3 [ref. 41721]). •Valid as Trichomycterus areolatus Valenciennes 1846 -- (Pequeño 1989:41 [ref. 14125], Burgess 1989:321 [ref. 12860], Ruiz & Berra 1994:14 [ref. 21384], Arratia 1998:354 [ref. 23661], de Pinna 1998:297 [ref. 23847], Dyer 2000:84 [ref. 26678] dated 1840, Fernandez 2000:352 [ref. 25077], Miquelarena & Fernández 2000:44 [ref. 27633], Fernández 2000:32 [ref. 26195], Fernández & Vari 2002:742 [ref. 26231], de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], López et al. 2003:39 [ref. 27366], Menni 2004:82 [ref. 28131], Ferraris 2007:415 [ref. 29155], Fernández & Vari 2012:635 [ref. 32359], Mirande & Koerber 2015:37 [ref. 35117], García-Melo et al. 2016:237 [ref. 34471], Ochoa et al. 2017:557 [ref. 35582], Mesa S. et al. 2018:110 [ref. 35987], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" areolatus). Current status: Valid as Trichomycterus areolatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Distribution: South America: Maipo River basin to Toltén River basin, western slopes (central Chile and Argentina). Habitat: freshwater.

argos, Trichomycterus Lezama [A. Q.], Triques [M. L.] & Santos [P. S.] 2012:62, Figs. 2, 3a [Zootaxa No. 3352; ref. 32020] Parque Estadual da Serra do Brigadeiro, Córrego Nova, headwaters of the Rio Casca, right bank tributary of Rio Doce at the limits of Rio Doce and Rio Paraíba do Sul basins, 20°43'19"S, 42°28'43"W, Minas Gerais State, Brazil. Holotype: DZUFMG 103. Paratypes: DZUFMG 058 (1), 059 (14), 067 (1, c&s); MZUSP 106274 (3). •Valid as Trichomycterus argos Lezama, Triques & Santos 2012 -- (García-Melo et al. 2016:237 [ref. 34471], Reis & de Pinna 2022:29 [ref. 39360], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus argos Lezama, Triques & Santos 2012. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Casca drainage, Doce River basin, Minas Gerais (Brazil). Habitat: freshwater.

arhuaco, Trichomycterus Ardila Rodríguez [C. A.] 2016:9, Figs. 4, 5C, 6A, 7 [No. 2; ref. 35108] Río Guatapuri, Chemesquemena, Sierra Nevada de Santa Maria, cuenca del río Magdalena, Departamento del Cesar, Colombia, elevation 1150 meters. Holotype: CAR 684. Paratypes: CAR, IAvH-P, ICNMHN. •Valid as Trichomycterus arhuaco Ardila Rodríguez 2016 -- (DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:11 [ref. 35926], DoNascimiento & Prada-Pedreros 2020:11 [ref. 37386]). Current status: Valid as Trichomycterus arhuaco Ardila Rodríguez 2016. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Magdalena basin, Colombia. Habitat: freshwater.

ariasi, Trichomycterus Ardila Rodríguez [C. A.] 2025:7, Figs. 1, 5A, 6A, 7A, 8A [Barranquilla, Departamento del Atlántico No. 104-109; ref. 42474] Río Riofrio, San Pedro de la Sierra, municipio de Ciénaga, Departamento del Magdalena, Colombia. Holotype: CAR 1046. Paratypes: CAR 686 (7). •Valid as Trichomycterus ariasi Ardila Rodríguez 2025. Current status: Valid as Trichomycterus ariasi Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Riofrio drainage, Sierra Nevada de Santa Marta, Departamento del Magdalena, northern Colombia. Habitat: freshwater.

arleoi, Pygidium Fernández-Yépez [A.] 1972:21, Pl. 34 [Análisis ictiológico del complejo hidrográfico; ref. 19696] Río Yaracuy drainage, Venezuela. Holotype: whereabouts unknown. Paratypes: (58). Type catalog: Ferraris 2007:415 [ref. 29155]. •Valid as Trichomycterus arleoi (Fernández-Yépez 1972) -- (Burgess 1989:321 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Ferraris 2007:415 [ref. 29155], Ardila Rodríguez 2007:[9] [ref. 29569], Ardila Rodríguez 2011:[7] [ref. 32732], Ardila Rodríguez 2014:12 [ref. 33769], Ardila Rodríguez 2016:11 [ref. 34399], Ardila Rodríguez 2016:16 [ref. 35108], Ardila Rodríguez 2017:10 [ref. 35579], Ardila Rodríguez 2018:11 [ref. 35926]). Current status: Valid as Trichomycterus arleoi (Fernández-Yépez 1972). Trichomycteridae: Trichomycterinae. Distribution: Yaracuy River basin, Venezuela. Habitat: freshwater.

asocolcibios, Trichomycterus Ardila Rodríguez [C. A.] 2025:11, Figs. 2C-D, 5B, 7C, 8C [Barranquilla, Departamento del Atlántico No. 104-109; ref. 42474] Quebrada La Quitiana, afluente del Río Guayabito, Río Carare, municipio de Cimitarra, Departamento de Santander, Colombia. Holotype: CAR 1060. Paratypes: CAR 788 (13), CAR 1019 (3); IAVHP 20905 (61), IAVHP 20978 (63), IAVHP 20998 (1). •Valid as Trichomycterus asocolcibios Ardila Rodríguez 2025. Current status: Valid as Trichomycterus asocolcibios Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Guayabito drainage, Río Carare basin, Departamento de Santander, Colombia. Habitat: freshwater.

astromycterus, Trichomycterus Reis [V. J. C.], de Pinna [M. C. C.] & Pessali [T. C.] 2019:[2], Figs. 1-8 [Journal of Fish Biology v. 95 (no. 3); ref. 36902] Rio do Peixe, tributary of Rio Doce, Rio Doce municipality, Minas Gerais, Brazil, 20°11'40.32"S, 42°51'8.47"W. Holotype: MZUSP 124559. Paratypes: (51) MZUSP 123341 (1), 123361 (13), 123760 (37). •Valid as Trichomycterus astromycterus Reis, de Pinna & Pessali 2019 -- (Vilardo et al. 2022:[2] [ref. 39093], Reis & de Pinna 2022:31 [ref. 39360], Costa et al. 2023:12 [ref. 40511], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus astromycterus Reis, de Pinna & Pessali 2019. Trichomycteridae: Trichomycterinae. Distribution: South America: upper and middle Rio Doce drainage, Minas Gerais (Brazil). Habitat: freshwater.

atochae, Pygidium Allen [W. R.] in Eigenmann & Allen 1942:156, Pl. 13 (figs. 3-5) [Fishes of western South America; ref. 1246] Río de Atocha, Bolivia. Holotype: CAS 64576 [ex IU 17819]. Paratypes: CAS 64577 [ex IU 17819] (4), USNM 167864 [ex IU 17819] (83). Type catalog: Ferraris & Vari 1992:41 [ref. 19771], Ferraris 2007:423 [ref. 29155]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155]). •Valid as Trichomycterus atochae (Allen 1942) -- (Fernández 2000:32 [ref. 26195], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Sarmiento et al. 2014:193 [ref. 35004]). Current status: Valid as Trichomycterus atochae (Allen 1942). Trichomycteridae: Trichomycterinae. Distribution: Bolivia. Habitat: freshwater.

auroguttatus, Trichomycterus Costa [W. J. E. M.] 1992:105, Fig. 6 [Revue française d'Aquariologie Herpétologie v. 18 (no. 4) [for 1991]; ref. 19725] Rio Marimbondo, tributary of Rio Preto, Rio Paraiba basin, 1 kilometer west of Visconde de Mauá, Rio de Janeiro, Brazil. Holotype: MZUSP 43341. Paratypes: MNRJ 611 (4), 640 (2); MZUSP 43342 (4). Type catalog: Ferraris 2007:415 [ref. 29155]. •Synonym of Trichomycterus alternatus (Eigenmann 1917) -- (Reis & de Pinna 2022:15 [ref. 39360]). •Valid as Trichomycterus auroguttatus Costa 1992 -- (Bizerril 1994:623 [ref. 22673], Burgess & Finley 1996:167 [ref. 22901], de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:415 [ref. 29155], Barbosa & Costa 2010:120 [ref. 30782], Barbosa & Costa 2011:308 [ref. 31672], Barbosa & Costa 2012:81 [ref. 31901], Costa et al. 2022:513 [ref. 39820] in subgenus Psammocambeva, Sarmento-Soares et al. 2024:558 [ref. 42662], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus auroguttatus Costa 1992. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Preto drainage, Paraíba do Sul basin, Rio de Janeiro State (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

bahianus, Trichomycterus Costa [W. J. E. M.] 1992:105, Fig. 5 [Revue française d'Aquariologie Herpétologie v. 18 (no. 4) [for 1991]; ref. 19725] Tributary stream of ribeirao Caveira, Rio Una basin, 6.5 kilometers southeast of São José, Bahia, Brazil. Holotype: MZUSP 43340. Paratypes: MZUSP 38636 (8). Type catalog: Ferraris 2007:415 [ref. 29155]. •Valid as Trichomycterus bahianus Costa 1992 -- (Bizerril 1994:623 [ref. 22673], Burgess & Finley 1996:168 [ref. 22901], de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Ferraris 2007:415 [ref. 29155], Barbosa & Costa 2011:308 [ref. 31672], Silva et al. 2020:13 [ref. 37809], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus bahianus Costa 1992. Trichomycteridae: Trichomycterinae. Distribution: South America: tributary Stream of Ribeirão Caveira, Una River basin, Bahia State (Brazil). Habitat: freshwater.

ballesterosi, Trichomycterus Ardila Rodríguez [C. A.] 2011:4, Figs. 1-10 [Dahlia (Revista de la Asociación Colombiana de Ictiólogos, ACICTIOS). v. 11; ref. 31409] Upper río Sinú, Municipio de Tierralta, Córdoba Departamento, Colombia, elevation 250-260 meters. Holotype: CAR 400. Paratypes: CAR 330 (55), 339 (10), 395 (7); CZUT-IC 3416 (5); IAvH-P 11715 (5) [ex CAR 330]. Type catalog: DoNascimiento et al. 2016:417 [ref. 34787]. •Valid as Trichomycterus ballesterosi Ardila Rodríguez 2011 -- (Ardila Rodríguez 2014:10 [ref. 33769], Ardila Rodríguez 2016:12 [ref. 34399], Ardila Rodríguez 2016:15 [ref. 35108], Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926]). Current status: Valid as Trichomycterus ballesterosi Ardila Rodríguez 2011. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Sinú River basin, Córdoba, Colombia. Habitat: freshwater.

banneaui, Pygidium Eigenmann [C. H.] 1912:19 [Indiana University Studies No. 16 [sic No. 8]; ref. 1228] Bernal Creek near Honda, Colombia. Holotype: FMNH 56025 [ex CM 4815]. Paratypes: (88, CM and IU) CAS 58127 [ex IU 12677] (26); FMNH 56026 (20), 69815 (34); USNM 79234 (3 or 4). Type catalog: Henn 1928:79 [ref. 12305], Ibarra & Stewart 1987:72 [ref. 12367], Ferraris & Vari 1992:41 [ref. 19771]. •Synonym of Trichomycterus bogotense (Eigenmann 1912) -- (de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061]). •Valid as Trichomycterus banneaui (Eigenmann 1912) -- (Burgess 1989:321 [ref. 12860], Ferraris 2007:415 [ref. 29155], Ardila Rodríguez 2007:[9] [ref. 29569], Castellanos-Morales 2008:312 [ref. 29836], Ardila Rodríguez 2011:10 [ref. 31409], Ardila Rodríguez 2011:19 [ref. 31410], Ardila Rodríguez 2014:10 [ref. 33769], Barriga Salazar 2014:111 [ref. 35745], Jiménez-Prado et al. 2015:202 [ref. 34894], Ardila Rodríguez 2016:12 [ref. 34399], Ardila Rodríguez 2016:16 [ref. 35108], Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926], Mesa S. et al. 2018:110 [ref. 35987], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" banneaui, Escobar Camacho et al. 2024:8 [ref. 40892] as aff. banneaui, Griesbaum et al. 2025:3 [ref. 42462]). Current status: Valid as Trichomycterus banneaui (Eigenmann 1912). Trichomycteridae: Trichomycterinae. Distribution: South America: Magdalena basin (Colombia and Ecuador). Habitat: freshwater.

barbatula, Trichomycterus Valenciennes [A.] in Cuvier & Valenciennes 1846:498 [Histoire naturelle des poissons v. 18; ref. 1011] Guasacona and River de Pontezualo near Coroico, Bolivia, 16°-17° N. Lat., elevation 13000-14000 feet. Syntypes: MNHN 0000-4077 (2) Río Pontezualo, 0000-4078 (5) and B-0587 (3) Río Guasacona. Type catalog: Bertin & Estève 1950:62 [ref. 19575], Ferraris 2007:422 [ref. 29155]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:422 [ref. 29155]). Current status: Synonym of Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

barbouri, Pygidium Eigenmann [C. H.] 1911:214, Pl. 32 [Annals of the Carnegie Museum v. 7 (no. 2); ref. 11113] Río Beni, eastern Bolivia. Holotype: MCZ 29313. Paratypes: (34, CM and IU) CAS 64578 [ex IU 12566] (1); FMNH 53946 (5); MCZ 29313 (1), 29314 (orig. 32, now 23), USNM 120289 (4). Type catalog: Ibarra & Stewart 1987:72 [ref. 12367], Ferraris & Vari 1992:41 [ref. 19771], Ferraris 2007:415 [ref. 29155] Appeared first without distinguishing features in Eigenmann 1910:400 [ref. 1224]. Fernández 2000:28 [ref. 26195] stated that no type was designated in the original description, but the type is listed as MCZ 29313 in the original. •Valid as Trichomycterus barbouri (Eigenmann 1911) -- (Burgess 1989:321 [ref. 12860], Fernández 2000:28 [ref. 26195], Miquelarena & Fernández 2000:44 [ref. 27633], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], López et al. 2003:39 [ref. 27366], Menni 2004:82 [ref. 28131], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:415 [ref. 29155], Sarmiento et al. 2014:193 [ref. 35004], Cardoso & Bogan 2015:149 [ref. 42425], Mirande & Koerber 2015:37 [ref. 35117], García-Melo et al. 2016:237 [ref. 34471], Chuctaya et al. 2022:49 [ref. 42137]). Current status: Valid as Trichomycterus barbouri (Eigenmann 1911). Trichomycteridae: Trichomycterinae. Distribution: South America: Amazon River basin, La Plata River basin and Beni River basin (Argentina, Bolivia and Peru). Habitat: freshwater.

barrocus, Trichomycterus Reis [V. J. C.] & de Pinna [M. C. C.] 2022:37, Fig. 17 [Zoological Journal of the Linnean Society v. 197 (no. 2); ref. 39360] Boa Sorte River, Guandu River, Afonso Cláudio, Espírito Santo, Brazil, 20°10'57.00"S, 41°4'50.00"W. Holotype: MBML 14092. Paratypes: MBML 14093 (2), MZUSP 126763 (1). •Valid as Trichomycterus barrocus Reis & de Pinna 2022 -- (Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus barrocus Reis & de Pinna 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: lower Rio Doce drainage, Espírito Santo (Brazil). Habitat: freshwater.

belensis, Trichomycterus Fernández [L.] & Vari [R. P.] 2002:739, Fig. 1 [Copeia 2002 (no. 3); ref. 26231] Stream tributary to Laguna Blanca, 11 kilometers northeast from Belén on provincial road 43 along route from Belén to Antofagasta de la Sierra, near Los Nacimientos de San Antonio, ca. 26°30'S, 67°03'W, Belén, Catamarca Province, Argentina, eleva. 3500 m. Holotype: FML 2530. Paratypes: FML 2531 (26, 5 c&s), USNM 364371 (2). Plus non-type specimens. Type catalog: Ferraris 2007:415 [ref. 29155]. •Valid as Trichomycterus belensis Fernández & Vari 2002 -- (de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], López et al. 2003:39 [ref. 27366], Fernádez & Schaefer 2003:357 [ref. 27407], Menni 2004:82 [ref. 28131], Fernández & Osinaga 2006:387 [ref. 28738], Ferraris 2007:415 [ref. 29155], Mirande & Koerber 2015:37 [ref. 35117], Fernández & Andreoli Bize 2018:366 [ref. 36232], Fernández et al. 2023:462 [ref. 40542]). Current status: Valid as Trichomycterus belensis Fernández & Vari 2002. Trichomycteridae: Trichomycterinae. Distribution: South America: Laguna Blanca River basin, Argentina. Habitat: freshwater.

berthalutzae, Trichomycterus (Cryptocambeva) Costa [W. J. E. M.], Barbosa [M. A.] & Katz [A. M.] 2024:125, Figs. 1, 2A-C [European Journal of Taxonomy v. 970; ref. 41685] Rio Alto Pratinha, tributary of Rio Muqui do Sul, Rio Itabapoana basin, Mimoso do Sul Municipality, Espírito Santo State, Brazil, 21°03'51"S, 41°18'13"W, elevation circa 205 meters. Holotype: UFRJ 12930. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus berthalutzae Costa, Barbosa & Katz 2024. Current status: Valid as Trichomycterus berthalutzae Costa, Barbosa & Katz 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Muqui do Sul drainage, Rio Itabapoana basin, Espírito Santo State, Brazil. Habitat: freshwater.

betuliaensis, Trichomycterus Ardila Rodríguez [C. A.] 2017:5, Figs. 1, 2, 5A, 6A, 7A, 8 [Barranquilla, Departamento del Atlántico No. 10; ref. 35812] Quebrada Golondrinas, afluente de la quebrada La Putana, vereda Golondrinas, cuenca del río Magdalena, municipio de Betulia, Departamento del Santander, Colombia. Holotype: CAR 785. Paratypes: CAR, IAvH-P. •Valid as Trichomycterus betuliaensis Ardila Rodríguez 2017 -- (Ardila Rodríguez 2018:9 [ref. 35926], Ardila Rodríguez 2023:7 [ref. 40609]). •Synonym of Trichomycterus ruitoquensis Ardila Rodríguez 2007 -- (DoNascimiento & Prada-Pedreros 2020:12 [ref. 37386]). Current status: Synonym of Trichomycterus ruitoquensis Ardila Rodríguez 2007. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

bogotense, Pygidium Eigenmann [C. H.] 1912:18 [Indiana University Studies No. 16 [sic No. 8]; ref. 1228] Chapinero, near Bogotá, Colombia. Holotype: FMNH 56030 [ex CM 4820]. Paratypes: (245, CM and IU) AMNH 7107 (5, 1 c&s); CAS 58118 [ex IU 12679] (27); FMNH 56031 (128), 56044 (3); USNM 79232 (10). Type catalog: Henn 1928:79 [ref. 12305], Ibarra & Stewart 1987:72 [ref. 12367], Ferraris & Vari 1992:42 [ref. 19771], Ferraris 2007:415 [ref. 29155]. •Valid as Trichomycterus bogotense (Eigenmann 1912) -- (Burgess 1989:321 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061]). •Valid as Trichomycterus bogotensis (Eigenmann 1912) -- (Ferraris 2007:415 [ref. 29155], Castellanos-Morales 2008:312 [ref. 29836], Ardila Rodríguez 2008:39 [ref. 30122], Ardila Rodríguez 2011:10 [ref. 31409], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:12 [ref. 34399] as bogotense, Ardila Rodríguez 2016:16 [ref. 35108] as bogotense, Ardila Rodríguez 2017:11 [ref. 35579] as bogotense, DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926] as bogotense, Castellanos-Morales 2018:127 [ref. 35988]). Current status: Valid as Trichomycterus bogotensis (Eigenmann 1912). Trichomycteridae: Trichomycterinae. Distribution: River drainages in Departamento de Cundinamarca, Colombia and Venezuela. Habitat: freshwater.

bomboizanum, Pygidium Tortonese [E.] 1942:113 [1], Pl. 1 [Bollettino dei Musei di Zoologia e di Anatomia Comparata della R. Università di Torino (Serie 4) v. 49 (no. 121) (for 1941-1942); ref. 10293] Río Bomboiza, Ecuador. Holotype: MZUT 3553 (1 of 2, incl. paratype). Paratypes: MZUT 3553 (1 of 2). Type catalog: Ferraris 2007:416 [ref. 29155]. On p. 1 of separate. •Valid as Trichomycterus bomboizanus (Tortonese 1942) -- (de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Ferraris 2007:416 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745]). Current status: Valid as Trichomycterus bomboizanus (Tortonese 1942). Trichomycteridae: Trichomycterinae. Distribution: Bomboiza River basin, Ecuador. Habitat: freshwater.

borellii, Trichomycterus Boulenger [G. A.] 1897:3 [Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino v. 12 (no. 279); ref. 14624] Missión de Aguairenda (Bolivia) and Tala and Lesser (Salta Province, Argentina). Syntypes: BMNH 1897.1.27.26 (1): ZMUT 1396-98 (6, 2, 1). Type catalog: Tortonese 1940:137 [ref. 21559] with holotype, Ferraris 2007:416 [ref. 29155]. Information on type locality see Koerber & Terán 2021:139, 140 [ref. 38314]. •Valid as Trichomycterus borellii Boulenger 1897 -- (Burgess 1989:321 [ref. 12860], Fernández 2000:32 [ref. 26195], Miquelarena & Fernández 2000:44 [ref. 27633], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], López et al. 2003:39 [ref. 27366] as borelli, Menni 2004:82 [ref. 28131], Ferraris 2007:416 [ref. 29155], Azpelicueta et al. 2010:2 [ref. 41139], Sarmiento et al. 2014:193 [ref. 35004], Mirande & Koerber 2015:37 [ref. 35117], Koerber & Terán 2021:139, 143 [ref. 38314]). Current status: Valid as Trichomycterus borellii Boulenger 1897. Trichomycteridae: Trichomycterinae. Distribution: South America: Salta, Catamarca and Mendoza in Argentina, and Aguairenda in Bolivia (Argentina and Bolivia). Habitat: freshwater.

boylei, Pygidium Nichols [J. T.] 1956:1, Fig. 1 [American Museum Novitates No. 1760; ref. 12215] Río Grande in Tilcara, Jujuy Province, Argentina, 23°23'S, 65°23'W, elevation 8000 feet. Holotype: AMNH 20299. Paratypes: AMNH 17271 (3). Type catalog: Ferraris 2007:416 [ref. 29155]. •Valid as Trichomycterus boylei (Nichols 1956) -- (Arratia & Menu-Marque 1984:506 [ref. 8254], Burgess 1989:321 [ref. 12860], Fernandez 2000:352 [ref. 25077], Fernández 2000:32 [ref. 26195], Fernández & Vari 2002:742 [ref. 26231], Miquelarena & Fernández 2000:44 [ref. 27633], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], López et al. 2003:39 [ref. 27366], Fernádez & Schaefer 2003:357 [ref. 27407], Menni 2004:82 [ref. 28131], Fernández & Osinaga 2006:387 [ref. 28738], Ferraris 2007:416 [ref. 29155], Sarmiento et al. 2014:193 [ref. 35004], Fernández et al. 2015:10 [ref. 35041], Mirande & Koerber 2015:37 [ref. 35117], García-Melo et al. 2016:237 [ref. 34471], Koerber et al. 2017:55 [ref. 35267], Fernández & Andreoli Bize 2018:366 [ref. 36232]). Current status: Valid as Trichomycterus boylei (Nichols 1956). Trichomycteridae: Trichomycterinae. Distribution: Argentina, Paraguay and Bolivia. Habitat: freshwater.

brasiliensis, Trichomycterus Lütken [C. F.] (ex Reinhardt) 1874:29 [1] [Oversigt over det Kongelige Danske Videnskabernes Selskabs Forhandlinger og dets Medlemmers Arbeider (Kjøbenhavn) 1874 (no. 1); ref. 2855] Rio das Velhas, Minas Gerais State, Brazil. Syntypes: NMW 85270 (3); SMNS 2021 (1); ZMB 9171 (2); ZMUC P30154 [ex 103] (1), P30155-56 [ex 108-109] (1, 1), P30157 [ex 114] (1), P30158 [ex 116] (1), P30159 [ex 119] (1), P30160 [ex 120] (1), P30161 [ex 123], P30162 [ex 127] (1), P. 30163 [ex 121], P30164-66 [ex 124-126] (1, 1, 1). Type catalog: Nielsen 1974:51 [ref. 9588], Fricke 1995:19 [ref. 28100], Fricke 2005:63 [ref. 29864], Ferraris 2007:416 [ref. 29155]. On p. 1 of separate. Also described in Lütken 1875:135 (and p. I of summary), Pl. 3 (fig. 8) [ref. 19674]. •Valid as Trichomycterus brasiliensis Lütken 1874 -- (Burgess 1989:321 [ref. 12860], Trajano & de Pinna 1996:89 [ref. 22915], Casatti & Castro 1998:232 [ref. 23663], Britski et al. 1999:92 [ref. 24147], Britski 2001:19 [ref. 26046], Fernández & Bichuette 2002:278 [ref. 26539], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Barbosa & Costa 2003:282 [ref. 27395], Barbosa & Costa 2003:179 [ref. 27636], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:416 [ref. 29155], Barbosa & Costa 2008:184 [ref. 29961], Barbosa & Costa 2010:118 [ref. 30782], Barbosa & Costa 2012:81 [ref. 31901], Barbosa & Azevedo-Santos 2012:360 [ref. 32318], García-Melo et al. 2016:238 [ref. 34471], Barbosa & Katz 2016:262 [ref. 34950], Ochoa et al. 2017:557 [ref. 35582], Donin et al. 2020:16 [ref. 37395], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus brasiliensis Lütken 1874. Trichomycteridae: Trichomycterinae. Distribution: South America: upper São Francisco River basin, Minas Gerais State and in smaller adjoining basins (southeastern Brazil). Habitat: freshwater.

brigadeirensis, Trichomycterus Costa [W. J. E. M.], Katz [A. M.] & Vilardo [P. J.] in Costa, Mattos, Barbosa, Vilardo & Katz 2023:6, Figs. 3A, 4, 5A, 6A, 7A [Fishes v. 8: 474; ref. 40511] Ribeirão Félix, upper Rio Casca drainage, Rio Doce basin, Serra do Brigadeiro, Araponga Municipality, Minas Gerais State, Brazil, 20°41'31"S, 42°29'52"W, elevation about 1,100 meters. Holotype: UFRJ 13480. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus brigadeirensis Costa, Katz & Vilardo 2023 -- (Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus brigadeirensis Costa, Katz & Vilardo 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Casca drainage, Rio Doce basin, Minas Gerais (southeastern Brazil). Habitat: freshwater.

brucutu, Trichomycterus Reis [V. J. C.] & de Pinna [M. C. C.] 2022:41, Fig. 19 [Zoological Journal of the Linnean Society v. 197 (no. 2); ref. 39360] Lajeado Creek, tributary of Rio Mãe d’Água, Santo Antônio de Itambé, Minas Gerais, Brazil, 18°30'0.00"S, 43°17'60.00"W. Holotype: MZUSP 87834. Paratypes: MNRJ 48472 (1), MZUSP 126757 (2). •Valid as Trichomycterus brucutu Reis & de Pinna 2022 -- (Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus brucutu Reis & de Pinna 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Santo Antônio drainage, middle Rio Doce basin, Minas Gerais (southeastern Brazil). Habitat: freshwater.

brunoi, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2010:99, Figs. 1-2 [Ichthyological Exploration of Freshwaters v. 21 (no. 2); ref. 30782] Lateral channel of Rio Caparó, Rio Itabapoana basin, Alto Caparaó, 20°25'54"S, 41°51'57"W, Município de Alto Caparaó, Estado de Minas Gerais, Brazil. Holotype: UFRJ 6030. Paratypes: UFRJ 5649 (11), 5650 (2), 5658 (5, c&s). •Valid as Trichomycterus brunoi Barbosa & Costa 2010 -- (Barbosa 2013:274 [ref. 33106], García-Melo et al. 2016:237 [ref. 34471], Barbosa & Katz 2016:262 [ref. 34950], Reis & de Pinna 2022:44 [ref. 39360], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258], Costa et al. 2024:134 [ref. 41685]). Current status: Valid as Trichomycterus brunoi Barbosa & Costa 2010. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Itabapoana and upper Rio Doce drainages, Minas Gerais (Brazil). Habitat: freshwater.

cachiraensis, Trichomycterus Ardila Rodríguez [C. A.] 2008:34, Figs. 2-8 [Dahlia (Revista de la Asociación Colombiana de Ictiólogos, ACICTIOS). v. 10; ref. 30123] Río Galvánes, afluente parte alta Río Cáchira, Municipio Cáchira, Departemento de Norte de Santander, Colombia, 7°44'47"N, 73°03'04"W, elevation 2025 meters. Holotype: CAR 125. Paratypes: CAR 97 (42); CZUT-IC 2920 (3); IAvHP 11114 (5 or 11); MBUCV-V-35384 (3). Type catalog: DoNascimiento et al. 2016:417 [ref. 34787]. •Valid as Trichomycterus cachiraensis Ardila Rodríguez 2008 -- (Ardila Rodríguez 2011:10 [ref. 31409], Ardila Rodríguez 2011:19 [ref. 31410], DoNascimiento et al. 2014:726 [ref. 33632], Ardila Rodríguez 2014:10, 11 [ref. 33769], Ardila Rodríguez 2016:12 [ref. 34399], García-Melo et al. 2016:237 [ref. 34471], Ardila Rodríguez 2016:16 [ref. 35108], Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926], Mesa S. et al. 2018:110 [ref. 35987], Castellanos-Morales 2018:127 [ref. 35988], Miranda & Fernández 2020:463 [ref. 37703], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" cachiraensis). Current status: Valid as Trichomycterus cachiraensis Ardila Rodríguez 2008. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Río Cáchira, Magdalena River basin (Colombia). Habitat: freshwater.

caipora, Trichomycterus Lima [S. M. Q.], Lazzarotto [H.] & Costa [W. J. E. M.] 2008:316, Figs. 1-3 [Neotropical Ichthyology v. 6 (no. 3); ref. 29837] Município de Conceição de Macabu, lagoa Feia drainagem rio Macabu basin, rio Macabu upstream of the confluence of rio Carocango and rio Macabu, 22°04'51.8"S, 41°58'55.3'W, Estado de Rio de Janeiro, Brazil. Holotype: UFRJ 6583. Paratypes: MNRJ 31924 (2?); UFRJ 7247 (12), 7257 (2?), 7614 (3, c&s). •Valid as Trichomycterus caipora Lima, Lazzarotto & Costa 2008 -- (da Silva et al. 2010:50 [ref. 30755], García-Melo et al. 2016:237 [ref. 34471], Nascimento et al. 2017:511 [ref. 35440], Costa et al. 2020:81 [ref. 38088], Reis & de Pinna 2022:47 [ref. 39360] as aff., Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus caipora Lima, Lazzarotto & Costa 2008. Trichomycteridae: Trichomycterinae. Distribution: South America: Macabu River basin, lagoa Feia drainage, Rio de Janeiro State (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

calai, Trichomycterus Ardila Rodríguez [C. A.] 2019:5, Figs. 1-3, 5A-B, 6-9A [Barranquilla, Departamento del Atlántico No. 13; ref. 36944] Quebrada Guamacá, afluente de la quebrade Santa Rosa, cuenca Río Suárez, municipio de Simacota, Departamento de Santander, Colombia, 06°26'35"N, 73°20'15"W. Holotype: CAR 815. Paratypes: CAR, ICNMHN. •Valid as Trichomycterus calai Ardila Rodríguez 2019 -- (Ardila Rodríguez 2023:7 [ref. 40609], Ardila Rodríguez 2025:5 [ref. 42104]). Current status: Valid as Trichomycterus calai Ardila Rodríguez 2019. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Suárez drainage, Santander, Colombia. Habitat: freshwater.

caliense, Pygidium Eigenmann [C. H.] 1912:18 [Indiana University Studies No. 16 [sic No. 8]; ref. 1228] Cali (3°27'N, 76°31'W), Colombia. Holotype (unique): FMNH 56029 [ex CM 4819 not 6819]. Type catalog: Henn 1928:80 [ref. 12305], Ibarra & Stewart 1987:72 [ref. 12367], Ferraris 2007:416 [ref. 29155]. •Valid as Trichomycterus caliense (Eigenmann 1912) -- (Burgess 1989:322 [ref. 12860], Román-Valencia 2001:657 [ref. 27072], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Fernández & Schaefer 2005:73 [ref. 28090]). •Valid as Trichomycterus caliensis (Eigenmann 1912) -- (Ferraris 2007:416 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745]). Current status: Valid as Trichomycterus caliensis (Eigenmann 1912). Trichomycteridae: Trichomycterinae. Distribution: Calima River basin, Colombia and Ecuador. Habitat: freshwater.

candidus, Eremophilus Miranda Ribeiro [P. de] 1949:2, Pls. [Boletim do Museu Nacional, Zoologia (N. S.) No. 88; ref. 13022] Rio Espirito Santo, tributary of the Rio Claro, east of Sapucaí, Minas Gerais State, Brazil. MNRJ 5209. Paratypes: (several) MNRJ 5033-34 (2), 5247 (1). Type catalog: Ferraris 2007:416 [ref. 29155]. •Valid as Eremophilus candidus Miranda Ribeiro 1949 -- (Burgess 1989:323 [ref. 12860], Fernández & Vari 2000:994 [ref. 25017]). •Valid as Trichomycterus candidus (Miranda Ribeiro 1949) -- (de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Barbosa & Costa 2003:282 [ref. 27395], Barbosa & Costa 2003:179 [ref. 27636], Wosiacki & Garavello 2004:3 [ref. 27649], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:416 [ref. 29155], Barbosa & Costa 2010:120 [ref. 30782], Ferrer & Malabarba 2011:65 [ref. 31348], Barbosa & Azevedo-Santos 2012:360 [ref. 32318], Ochoa et al. 2017:557 [ref. 35582], Azevedo-Santos et al. 2019:5 [ref. 36506], Donin et al. 2020:16 [ref. 37395], dos Reis et al. 2020:471 [ref. 38364], Costa et al. 2022:162 [ref. 39290], Costa et al. 2023:5 [ref. 40170], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus candidus (Miranda Ribeiro 1949). Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Sapucaí drainage, Rio Grande basin, upper Rio Paraná system (Minas Gerais State, Brazil). Habitat: freshwater.

caparaoensis, Trichomycterus Costa [W. J. E. M.], Barbosa [M. A.] & Katz [A. M.] in Costa, Mattos, Barbosa, Vilardo & Katz 2023:20, Figs. 3D, 5D, 6D, 7D, 11 [Fishes v. 8: 474; ref. 40511] Córrego Feio, tributary of Rio José Pedro, Rio Manhuaçu drainage, Rio Doce basin, Martins Soares Municipality, Serra do Caparaó, Minas Gerais State, Brazil, 20°23'37"S, 41°51'31"W, elevation about 1,015 meters. Holotype: UFRJ 6006. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus caparaoensis Costa, Barbosa & Katz 2023 -- (Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus caparaoensis Costa, Barbosa & Katz 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Manhuaçu drainage, Rio Doce basin, Minas Gerais (southeastern Brazil). Habitat: freshwater.

caratinguensis, Trichomycterus Costa [W. J. E. M.], Katz [A. M.] & Vilardo [P. J.] in Costa, Mattos, Barbosa, Vilardo & Katz 2023:13, Figs. 3B, 5B, 6B, 7B, 9 [Fishes v. 8: 474; ref. 40511] Córrego Tabuleiro II, a tributary of Rio Caratinga, Rio Doce basin, Santa Bárbara do Leste Municipality, Minas Gerais State, Brazil, 19°55'53"S, 42°08'27"W, elevation about 680 meters. Holotype: UFRJ 13815. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus caratinguensis Costa, Katz & Vilardo 2023 -- (Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus caratinguensis Costa, Katz & Vilardo 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Caratinga drainage, Rio Doce basin, Minas Gerais (southeastern Brazil). Habitat: freshwater.

caribensis, Trichomycterus Ardila Rodríguez [C. A.] 2024:7, Figs. 1-3, 5-9 [Barranquilla, Departamento del Atlántico No. 100; ref. 41675] Río Sevilla, Sierra nevada de Santa Marta, Departamento del Magdalena, Colombia. Holotype: CAR 1045. Paratypes: CAR 1017 (6), UARC-IC (1), UPTC (1). •Valid as Trichomycterus caribensis Ardila Rodríguez 2024. Current status: Valid as Trichomycterus caribensis Ardila Rodríguez 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Sevilla drainage, Departamento del Magdalena, Colombia. Habitat: freshwater.

casitaensis, Trichomycterus Ardila Rodríguez [C. A.] 2017:5, Figs. cover page, 2, 5-8 [Barranquilla, Departamento del Atlántico No. 3; ref. 35579] Río Tarra, parte alta, cuenca del río Catatumbo, Corregimiento de Casitas, Municipio de Ábrego, Departamento de Norte de Santander, Colombia. Holotype: CAR 700. Paratypes: CAR, IAvH-P, ICNMHN, IMCN. •Valid as Trichomycterus casitaensis Ardila Rodríguez 2017 -- (DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2019:9 [ref. 36944], DoNascimiento & Prada-Pedreros 2020:12 [ref. 37386]). Current status: Valid as Trichomycterus casitaensis Ardila Rodríguez 2017. Trichomycteridae: Trichomycterinae. Distribution: Río Tarra basin, Santander, Colombia. Habitat: freshwater.

castelensis, Trichomycterus Costa [W. J. E. M.], Katz [A. M.] & Vilardo [P. J.] in Costa, Mattos, Barbosa, Vilardo & Katz 2023:23, Figs. 3E, 5E, 6E, 7E, 12 [Fishes v. 8: 474; ref. 40511] Small stream tributary to Rio Boa Sorte, Rio Guandu drainage, Rio Doce basin, Afonso Claudio Municipality, Serra do Castelo, Espirito Santo [not Minas Gerais State as stated in orig. descr.], Brazil, 20°11'40"S, 41°03'42"W, elevation about 630 meters. Holotype: UFRJ 13481. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus castelensis Costa, Katz & Vilardo 2023 -- (Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus castelensis Costa, Katz & Vilardo 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Guandu drainage, Rio Doce basin, Espirito Santo State (southeastern Brazil). Habitat: freshwater.

catamarcensis, Trichomycterus Fernández [L.] & Vari [R. P.] 2000:990, Fig. 1 [Copeia 2000 (no. 4); ref. 25017] Stream tributary to Laguna Blanca, 11 kilm northeast from Belén on provincial road 43 along route from Belén to Antofagasta de la Sierra, near Los Nacimientos de San Antonio (ca. 26°30'S, 67°03'W), Depto Belén, Prov. de Catamarca, Argentina, elev. 3500 m. Holotype: FML 2507. Paratypes: FML 2508 (8), USNM 357449 (1). Type catalog: Ferraris 2007:416 [ref. 29155]. •Valid as Trichomycterus catamarcensis Fernández & Vari 2000 -- (López et al. 2002:60 [ref. 26808], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], López et al. 2003:39 [ref. 27366], Fernádez & Schaefer 2003:357 [ref. 27407], Menni 2004:82 [ref. 28131], Ferraris 2007:416 [ref. 29155], Ferrer & Malabarba 2011:65 [ref. 31348], Mirande & Koerber 2015:37 [ref. 35117], Ochoa et al. 2017:557 [ref. 35582], Fernández & Andreoli Bize 2018:366 [ref. 36232], Fernández et al. 2023:462 [ref. 40542]). Current status: Valid as Trichomycterus catamarcensis Fernández & Vari 2000. Trichomycteridae: Trichomycterinae. Distribution: South America: Laguna Blanca basin, Catamarca Province, Argentina. Habitat: freshwater.

caudofasciatus, Trichomycterus Alencar [A. R.] & Costa [W. J. E. M.] 2004:5, Fig. 2 [Zootaxa No. 744; ref. 27991] Rio Caparaó, Rio Itabapoana basin, Alto Caparaó, 20°25'53.9"S, 41°51'56.8"W, Município de Alto Caparaó, Minas Gerais State, Brazil, elevation 1047 meters. Holotype: UFRJ 6002. Paratypes: MCP 35030 (2); UFRJ 4070 (5), 5655-57 (10, 5 c&s, 10). Type catalog: Ferraris 2007:416 [ref. 29155]. •Valid as Trichomycterus caudofasciatus Alencar & Costa 2004 -- (Ferraris 2007:416 [ref. 29155], Barbosa & Costa 2010:120 [ref. 30782], Barbosa & Costa 2011:308 [ref. 31672], Barbosa & Costa 2012:156 [ref. 32045], Reis & de Pinna 2019:117 [ref. 36632], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258], Costa et al. 2024:134 [ref. 41685]). Current status: Valid as Trichomycterus caudofasciatus Alencar & Costa 2004. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Itabapoana River basin, Serra do Caparaó, Minas Gerais (Brazil). Habitat: freshwater.

celsae, Trichomycterus Lasso [C. A.] & Provenzano [F.] 2003:1140, Figs. 1, 2A-6A [Revista de Biología Tropical v. 50 (no. 3-4) [for 2002]; ref. 26951] Río Kukenán, cabeceras, valle between los tepuyes Roraima and Kukenán, Gran Sabana, 5°06'30"N, 60°49'48"W, Estado Bolívar, Venezuela. Holotype: MHNLS 6453. Paratypes: MBUCV-V-29600 (2); MHNLS 6467 (3), 13318 (6). Type catalog: Ferraris 2007:416 [ref. 29155]. •Valid as Trichomycterus celsae Lasso & Provenzano 2002 -- (Ferraris 2007:416 [ref. 29155]). Current status: Valid as Trichomycterus celsae Lasso & Provenzano 2003. Trichomycteridae: Trichomycterinae. Distribution: Kukenán River, Bolívar, Venezuela. Habitat: freshwater.

cepitaensis, Trichomycterus Ardila Rodríguez [C. A.] 2025:6, Figs. 1-7 [Barranquilla, Departamento del Atlántico No. 102; ref. 42254] Río Chicamocha, vereda San Miguel, Municipio de Cepitá, Departamento de Santander, Colombia, 6°45'10"N, 72°58'24"W. Holotype: CAR 1022. Paratypes: CAR 1013 (5), 1014 (2). •Valid as Trichomycterus cepitaensis Ardila Rodríguez 2025. Current status: Valid as Trichomycterus cepitaensis Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Chicamocha River drainage, Departamento de Santander, Colombia. Habitat: freshwater.

cerritoensis, Trichomycterus Ardila Rodríguez [C. A.] 2018:14, Fig. 7 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Quebrada Borli, afluente del río Cervitá, Vereda Humalá, municipio El Cerrito, Provincia de García Rovira, Departamento de Santander, Colombia, elevation 2500 meters. Holotype: CAR 809. Paratypes: CAR. •Valid as Trichomycterus cerritoensis Ardila Rodríguez 2018 -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386], Ardila Rodríguez 2023:7 [ref. 40609]). Current status: Valid as Trichomycterus cerritoensis Ardila Rodríguez 2018. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Cervitá drainage, Departamento de Santander, Colombia. Habitat: freshwater.

chaberti, Trichomycterus Durand [J.] 1968:344, Fig. 3 [Annales de Spéléologie v. 23 (no. 2); ref. 21537] Cave of Umayalanta, 8 kilometers northwest of town of Torotoro, Potosí dept., Bolivia. Holotype: MNHN 1968-0217. Paratypes: (29) ANSP 140068 (1); MHNG 1513.19-22 (4). Type catalog: Mahnert 1976:475 [ref. 21535], Ferraris 2007:417 [ref. 29155]. •Valid as Trichomycterus chaberti Durand 1968 -- (Romero & Paulson 2001:28 [ref. 26040], Fernández & Bichuette 2002:273 [ref. 26539], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Bichuette & Trajano 2004:243 [ref. 27856], Ardila Rodríguez 2006:7 [ref. 28863], Proudlove 2006:145 [ref. 28992], Castellanos-Morales 2007:49 [ref. 29323], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:417 [ref. 29155], Rizzato et al. 2011:478 [ref. 31516], Bichuette & Rizzato 2012:49 [ref. 32163], Sarmiento et al. 2014:179, 193 [ref. 35004]). Current status: Valid as Trichomycterus chaberti Durand 1968. Trichomycteridae: Trichomycterinae. Distribution: Umayalanta cave system, Bolivia. Habitat: freshwater.

chapmani, Pygidium Eigenmann [C. H.] 1912:18 [Indiana University Studies No. 16 [sic No. 8]; ref. 1228] Boquia, Colombia. Holotype: FMNH 56027 [ex CM 4817]. Paratypes: (33, CM and IU) CAS 58128 [ex IU 12678] (8); FMNH 50628 (10), 69813 (16); USNM 79233 (3). Type catalog: Henn 1928:80 [ref. 12305], Ibarra & Stewart 1987:72 [ref. 12367], Ferraris & Vari 1992:42 [ref. 19771], Ferraris 2007:417 [ref. 29155]. •Valid as Trichomycterus chapmani (Eigenmann 1912) -- (Burgess 1989:322 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Fernández & Schaefer 2005:73 [ref. 28090], Ferraris 2007:417 [ref. 29155], Ardila Rodríguez 2007:[9] [ref. 29569], Ardila Rodríguez 2011:10 [ref. 31409], Ardila Rodríguez 2011:19 [ref. 31410], Ardila Rodríguez 2014:11 [ref. 33769], Barriga Salazar 2014:111 [ref. 35745], Ardila Rodríguez 2016:12 [ref. 34399], Ardila Rodríguez 2016:16 [ref. 35108], Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926]). Current status: Valid as Trichomycterus chapmani (Eigenmann 1912). Trichomycteridae: Trichomycterinae. Distribution: Colombia and Ecuador. Habitat: freshwater.

chiltoni, Pygidium Eigenmann [C. H.] 1920:54 [Revista Chilena de Historia Natural (Santiago) v. 23; ref. 29449] Estero Nonguen, Chile. Lectotype: CAS 57596 [ex IU 15059]. Paralectotypes: CAS 57597 [ex IU 15059] (68), 57598 [ex IU 15703] (4); MNHN 1921-0058 (1); USNM 84350 [ex IU 15059] (2). Type catalog: Bertin & Estève 1950:62 [ref. 19575], Ferraris & Vari 1992:42 [ref. 19771], Ferraris 2007:417 [ref. 29155]. Lectotype established in the caption to Pl. 8 in Eigenmann 1928 or 1927 [ref. 1245]. •Valid as Trichomycterus chiltoni (Eigenmann 1920) -- (Burgess 1989:322 [ref. 12860], Pequeño 1989:41 [ref. 14125], de Pinna 1998:297 [ref. 23847], Dyer 2000:84 [ref. 26678], de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Ferraris 2007:417 [ref. 29155]). Current status: Valid as Trichomycterus chiltoni (Eigenmann 1920). Trichomycteridae: Trichomycterinae. Distribution: Western drainages in central Chile. Habitat: freshwater.

choroloensis, Trichomycterus Ardila Rodríguez [C. A.] 2024:12, Figs. 2, 5C, 7C, 9B [Barranquilla, Departamento del Atlántico No. 98; ref. 41346] Cueva de Choroló, municipio de Curití, Departamento de Santander, Colombia. Holotype: CAR 1030. Paratypes: CAR 397 (9). •Valid as Trichomycterus choroloensis Ardila Rodríguez 2024. Current status: Valid as Trichomycterus choroloensis Ardila Rodríguez 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Cueva de Choroló, municipio de Curití, Santander, Colombia. Habitat: freshwater.

chungaraensis, Trichomycterus Arratia [G.] 1983:67, Fig. 2 [Studies on Neotropical Fauna and Environment v. 18 (no. 2); ref. 8378] Streams of Vertiente de Mal Paso, Chungará Lake, northern Chile, elevation 4500 meters. Holotype: FFSUC IC 290878A. Paratypes: FFSUC IC 181278A, 181278B, 200579A, 200579B, 290878B. Type catalog: Ferraris 2007:417 [ref. 29155]. •Valid as Trichomycterus chungaraensis Arratia 1983 -- (Arratia & Menu-Marque 1984:514 [ref. 8254], Burgess 1989:322 [ref. 12860], Pequeño 1989:41 [ref. 14125], Dyer 2000:84 [ref. 26678], Fernández & Vari 2000:993 [ref. 25017], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Fernádez & Schaefer 2003:357 [ref. 27407], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:417 [ref. 29155]). Current status: Valid as Trichomycterus chungaraensis Arratia 1983. Trichomycteridae: Trichomycterinae. Distribution: Streams of Chungará Lake, Chile. Habitat: freshwater.

claudiae, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2010:106, Figs. 5, 13 [Ichthyological Exploration of Freshwaters v. 21 (no. 2); ref. 30782] Small stream, tributary to Rio Piraí, between Rio Claro and Lídice, Paraíba do Sul River basin, circa 22°40'S, 44°02'W, Município de Rio Claro, Rio de Janeiro State, Brazil. Holotype: UFRJ 6027. Paratypes: UFRJ 5684 (9), 5685 (3, c&s). •Valid as Trichomycterus claudiae Barbosa & Costa 2010 -- (Barbosa & Costa 2012:79 [ref. 31901], Barbosa & Katz 2016:262 [ref. 34950], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus claudiae Barbosa & Costa 2010. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Paraíba do Sul River basin, Rio de Janeiro (Brazil). IUCN (2022): Data Deficient. Habitat: freshwater.

coelhorum, Trichomycterus (Paracambeva) Costa [W. J. E. M.], Azevedo-Santos [V. M.] & Katz [A. M.] in Costa, Azevedo-Santos, Mattos & Katz 2023:27, Figs. 5F, 6H, 7F, 14 [Fishes v. 8 (no. 4): 206; ref. 40170] Stream tributary of Rio Uberaba, Rio Grande drainage, upper Rio Paraná basin, Veríssimo municipality, Minas Gerais State, Brazil, 19°39'21"S, 48°15'21"W, elevation about 665 meters. Holotype: UFRJ 13410. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus coelhorum Costa, Azevedo-Santos & Katz 2023 Current status: Valid as Trichomycterus coelhorum Costa, Azevedo-Santos & Katz 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Uberaba subdrainage, middle Rio Grande drainage, upper Paraná River basin, Minas Gerais State, Brazil. Habitat: freshwater.

colombia, Trichomycterus Ardila Rodríguez [C. A.] 2018:18, Fig. 11 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Afluente del río Oibita, Vereda las Monjas, municipio de Oiba, Departamento de Santander, Colombia. Holotype: CAR 805. Paratypes: CAR, ICNMHN. •Valid as Trichomycterus colombia Ardila Rodríguez 2018 -- (Ardila Rodríguez 2019:15 [ref. 36944], Ardila Rodríguez 2023:7 [ref. 40609], Ardila Rodríguez 2023:17 [ref. 40647], Ardila Rodríguez 2025:4 [ref. 42104]). •Synonym of Trichomycterus latistriatus (Eigenmann 1917) -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386]). Current status: Synonym of Trichomycterus latistriatus (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Habitat: freshwater.

conradi, Pygidium Eigenmann [C. H.] 1912:212 [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Amatuk, Guyana. Holotype: FMNH 53721 [ex CM 2212]. Paratypes: CAS 58257 [ex IU 11710] (1). Type catalog: Henn 1928:80 [ref. 12305], Ibarra & Stewart 1987:72 [ref. 12367], Ferraris 2007:417 [ref. 29155]. •Valid as Trichomycterus conradi (Eigenmann 1912) -- (Burgess 1989:322 [ref. 12860], Romero & Paulson 2001:28 [ref. 26040] [hypogean population], Fernández & Bichuette 2002:278 [ref. 26539], Lasso & Provenzano 2003:1146 [ref. 26951], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Bichuette & Trajano 2004:243 [ref. 27856], Ferraris 2007:417 [ref. 29155], Taphorn et al. 2022:57 [ref. 41297], Akin et al. 2024:603 [ref. 41787]). Current status: Valid as Trichomycterus conradi (Eigenmann 1912). Trichomycteridae: Trichomycterinae. Distribution: South America: coastal river drainages (Guyana and Venezuela). Habitat: freshwater.

corduvensis, Trichomycterus Weyenbergh [H.] 1877:11, Pl. 3 (figs. 1-2) [Actas de la Academia Nacional de Ciencias Exactas, Buenos Aires. v. 3 (no. 1); ref. 14248] Río Primero, Cordoba, Santa Fe, Argentina. Syntypes: (several) MSNG 9020 (1). Type catalog: Tortonese 1963:310 [ref. 10351], Ferraris 2007:417 [ref. 29155] •Valid as Trichomycterus corduvense Weyenbergh 1877 -- (Arratia & Menu-Marque 1984:515 [ref. 8254] as corduvence, Haro et al. 1996:6 [ref. 25004], Butí 1998:310 [ref. 25279], López et al. 2003:39 [ref. 27366]). •Valid as Trichomycterus corduvensis Weyenbergh 1877 -- (Fernández 2000:32 [ref. 26195], Miquelarena & Fernández 2000:44 [ref. 27633], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Fernández & Vari 2004:880 [ref. 28047], Menni 2004:82 [ref. 28131], Ferraris 2007:416 [ref. 29155], Ferraris 2007:417 [ref. 29155], Fernández & Vari 2009:198 [ref. 30062], Azpelicueta et al. 2010:2 [ref. 41139], Sarmiento et al. 2014:193 [ref. 35004], Fernández et al. 2015:10 [ref. 35041], Mirande & Koerber 2015:37 [ref. 35117], Fernández & Andreoli Bize 2018:366 [ref. 36232], Fernández et al. 2023:458 [ref. 40542]). Current status: Valid as Trichomycterus corduvensis Weyenbergh 1877. Trichomycteridae: Trichomycterinae. Distribution: South America: Argentina and Bolivia. Habitat: freshwater.

curitiensis, Trichomycterus Ardila Rodríguez [C. A.] 2024:10, Figs. 3, 5B, 6B, 7B, 8B, 9, 10B [Barranquilla, Departamento del Atlántico No. 93; ref. 41039] Quebrada Curití, afluente del río Fonce, municipio de San Gil, Departamento de Santander, Colombia. Holotype: CAR 1006. Paratypes: CAR 476 (5). •Valid as Trichomycterus curitiensis Ardila Rodríguez 2024. Current status: Valid as Trichomycterus curitiensis Ardila Rodríguez 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Fonce drainage, Santander, Colombia. Habitat: freshwater.

dali, Trichomycterus Rizzato [P. P.], Costa [E. P. D., Jr.], Trajano [E.] & Bichuette [M. E.] 2011:479, Figs.1-12 [Neotropical Ichthyology v. 9 (no. 3); ref. 31516] Bonito, Saracura Cave, 21°09'14.6"S, 56°43'22.7"W, rio Paraguai basin, Serra da Bodoquena karst area, southwestern State of Mato Grosso do Sul, Brazil, elevation 792 meters. Holotype: MZUSP 106630. Paratypes: MZUSP 81056 (1), 106631 (1), 106632 (1), 106633 (1), 106634 (1), 106635 (1), 109770 (1). •Valid as Trichomycterus dali Rizzato, Costa, Trajano & Bichuette 2011 -- (Bichuette & Rizzato 2012:49 [ref. 32163]). Current status: Valid as Trichomycterus dali Rizzato, Costa, Trajano & Bichuette 2011. Trichomycteridae: Trichomycterinae. Distribution: South America: caves in Serra da Bodoquena karst area (Mato Grosso do Sul, Brazil). Habitat: freshwater.

diamantinensis, Trichomycterus (Psammocambeva) Costa [W. J. E. M.], Feltrin [C. R. M.], Mattos [J. L. O.] & Katz [A. M.] 2024:225, Figs. 2-3, 4A-C [Zoosystematics and Evolution v. 100 (no. 1); ref. 40868] Rio da Bomba, tributary of Rio Preto, Rio Santo Antônio drainage, Rio Paraguaçu basin, Vale do Capão district, Palmeiras Municipality, Bahia State, Brazil, 12°39'35"S, 41°29'14"W, elevation about 980 meters. Holotype: UFRJ 13688. Paratypes: UFRJ. •Valid as Trichomycterus diamantinensis Costa, Feltrin, Mattos & Katz 2024 -- (Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus diamantinensis Costa, Feltrin, Mattos & Katz 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Santo Antônio drainage, Rio Paraguaçu basin, Bahia State (Brazil). Habitat: freshwater.

dispar, Pygidium Tschudi [J. J. von] 1846:22, Pl. 3 [Untersuchungen über die Fauna Peruana; ref. 4469] Streams of the Andean Cordillera, Peru, elevation to 14000 feet. Syntypes: (several) MHNN 767 (1). Type catalog: Kottelat 1984:149 [ref. 21784], Kottelat 1987:52 [ref. 25858], Ferraris 2007:417 [ref. 29155]. •Valid as Trichomycterus dispar (Tschudi 1846) -- (Ovchynnyk 1967:35 [ref. 37559], Ortega & Vari 1986:15 [ref. 9708], Burgess 1989:322 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:417 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Valenzuela et al. 2023:95 [ref. 40815] as aff. dispar). Current status: Valid as Trichomycterus dispar (Tschudi 1846). Trichomycteridae: Trichomycterinae. Distribution: South America: Pacific slope (Ecuador and Peru). Habitat: freshwater.

donascimientoi, Trichomycterus Castellanos-Morales [C. A.] 2018:119, Figs. 1-5 [Biota Colombiana v. 19 (Sup. 1); ref. 35988] Cueva de Gedania, vereda Casas Blancas, 6 km South of town, near quebrada La Gran Curí, middle Suárez River drainage, Magdalena River system, 06°08'07.9"N, 73°35'50.4"W, elevation 1871 meters. Holotype: CAC-CDMB 224. Paratypes: CAC-CDMB, CAR, IAVHP, ICN-MHN, MLS, UIS-T. •Valid as Trichomycterus donascimientoi Castellanos-Morales 2018 -- (Ardila Rodríguez 2023:5 [ref. 40606], Ardila Rodríguez 2023:7 [ref. 40609], Ardila Rodríguez 2025:4 [ref. 42104]). Current status: Valid as Trichomycterus donascimientoi Castellanos-Morales 2018. Trichomycteridae: Trichomycterinae. Distribution: South America: Gedania cave, Gran Curí River drainage, Magdalena River basin, Santander, Colombia. Habitat: freshwater.

dorsostriatum, Pygidium Eigenmann [C. H.] 1917:695 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Villavicencio, Colombia. Holotype: FMNH 58096 [ex CM 7093]. Paratypes: CAS 64579 [ex IU 13810] (2), FMNH 58097 (1). Type catalog: Henn 1928:80 [ref. 12305], Ibarra & Stewart 1987:72 [ref. 12367], Ferraris 2007:417 [ref. 29155]. Appeared initially as dorsotriatum but as dorsostriatum in other Eigenmann publications; dorsotriatus regarded as a typographical error by WNE, Ferraris 2007:418 [ref. 29155] who disagrees. •Valid as Trichomycterus dorsostriatum (Eigenmann 1917) -- (Burgess 1989:322 [ref. 12860], García-Melo et al. 2016:237 [ref. 34471], DoNascimiento et al. 2017:69 [ref. 35633]). •Valid as Trichomycterus dorsostriatus (Eigenmann 1971) -- (de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Ferraris 2007:417-418 [ref. 29155] as dorsotriatus and dated 1918, Urbano-Bonilla et al. 2018:77 [ref. 35773]). Current status: Valid as Trichomycterus dorsostriatus (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: River drainages in Villavicencio, Colombia. Habitat: freshwater.

duellmani, Trichomycterus Arratia [G.] & Menu-Marque [S.] 1984:510, Figs. 14-15 [Zoologische Jahrbücher. Abteilung für Systematik, Ökologie und Geographie v. 111 (no. 4); ref. 8254] Río Tupiza, 12.5 kilometers southeast of Tupiza, Bolivia, 22°33'S, 65°45'W. Holotype: KU 20191. Paratypes: KU 20192-93 (5, 1), 20194 (5, c&s). Type catalog: Ferraris 2007:418 [ref. 29155]. •Valid as Trichomycterus duellmani Arratia & Menu-Marque 1984 -- (Fernández 2000:32 [ref. 26195], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Fernádez & Schaefer 2003:357 [ref. 27407], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:418 [ref. 29155], Datovo et al. 2012:35 [ref. 31994], Sarmiento et al. 2014:193 [ref. 35004], García-Melo et al. 2016:237 [ref. 34471]). Current status: Valid as Trichomycterus duellmani Arratia & Menu-Marque 1984. Trichomycteridae: Trichomycterinae. Distribution: Tupiza River basin, Bolivia. Habitat: freshwater.

eigenmanni, Trichomycterus Boulenger [G. A.] 1898:8 [Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino v. 13 (no. 329); ref. 14677] Cumbaca [unknown], Brazil. Holotype: MCZ 8301. Type catalog: Ferraris 2007:423 [ref. 29155]. New name for Pygidium kneri of Eigenmann 1889 (not of Steindachner). •Valid as Trichomycterus eigenmanni Boulenger 1898 -- (Ortega & Vari 1986:15 [ref. 9708], Burgess 1989:322 [ref. 12860]). •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155], DoNascimiento et al. 2014:726 [ref. 33632]). Current status: Synonym of Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

emanueli, Pygidium emanueli Schultz [L. P.] 1944:259, Pl. 5 (fig. C) [Proceedings of the United States National Museum v. 94 (no. 3172); ref. 3959] Río Chama at Estanques, Mérida State, Venezuela. Holotype: USNM 121223. Paratypes: G. Dahl [ex USNM] (2); MCZ 37214 [ex USNM] (5); UMMZ 141936 [ex USNM 121224] (5); USNM 121224 (orig. 51, now 33), 121225 (orig. 19, now 16), 121226 (14); ZMA 102117 (2); ZSI F2254/2 [ex USNM] (3), F2255/2 [ex USNM] (3). Type catalog: Menon & Yazdani 1968:131-132 [ref. 20743], Nijssen et al. 1982:62 [ref. 19236], Ferraris & Vari 1992:42 [ref. 19771], Ferraris 2007:418 [ref. 29155]. Described both as a new species and new subspecies. •Valid as Trichomycterus emanueli (Schultz 1944) -- (Burgess 1989:322 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Ferraris 2007:418 [ref. 29155], Ardila Rodríguez 2011:[7] [ref. 32732], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:10 [ref. 34399], García-Melo et al. 2016:237 [ref. 34471], Ardila Rodríguez 2016:16 [ref. 35108], Ardila Rodríguez 2017:10 [ref. 35579], DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:11 [ref. 35926]). Current status: Valid as Trichomycterus emanueli (Schultz 1944). Trichomycteridae: Trichomycterinae. Distribution: Chama River basin, Venezuela and Colombia. Habitat: freshwater.

espinhacensis, Trichomycterus Costa [W. J. E. M.] & Katz [A. M.] in Costa, Mattos, Barbosa, Vilardo & Katz 2023:16, Figs. 3C, 5C, 6C, 7C, 10 [Fishes v. 8: 474; ref. 40511] Rio Preto, tributary of Rio Guanhães, Rio Santo Antônio drainage, Rio Doce basin, Santo Antônio do Imbé Municipality, Serra do Espinhaço, Minas Gerais State, Brazil, 18°27'49"S, 43°18'26"W, elevation about 715 meters. Holotype: UFRJ 13483. Paratypes: CICCAA, UFRJ. Plus additional non-type material. •Valid as Trichomycterus espinhacensis Costa & Katz 2023 -- (Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus espinhacensis Costa & Katz 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Santo Antônio drainage, Rio Doce basin, Minas Gerais (southeastern Brazil). Habitat: freshwater.

fabioheppi, Trichomycterus (Psammocambeva) Costa [W. J. E. M.], Barbosa [M. A.] & Katz [A. M.] 2024:129, Figs. 2D-F, 4, 5A [European Journal of Taxonomy v. 970; ref. 41685] Stream tributary to Rio Preto, Rio Itabapoana basin, Serra das Torres, Mimoso do Sul Municipality, Espírito Santo State, Brazil, 21°02'06"S, 41°15'01"W, elevation circa 450 meters. Holotype: UFRJ 12931. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus fabioheppi Costa, Barbosa & Katz 2024. Current status: Valid as Trichomycterus fabioheppi Costa, Barbosa & Katz 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Preto drainage, Rio Itabapoana basin, Espírito Santo State, Brazil. Habitat: freshwater.

fassli, Pygidium Steindachner [F.] 1915:200 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 52 (no. 17); ref. 15071] Río Songo in North Yungas, upper Amazon River system, Bolivia. Syntypes: (4) NMW 44470 (1). Type catalog: Ferraris 2007:418 [ref. 29155]. Species originally spelled fassli in above abstract, spelling changed to fasslii when later illustrated and described in more detail in Steindachner 1915:97 [p. 83 of separate], Pl. 13 (figs. 1-2) [ref. 4244]; also in Steindachner 1917 [ref. 15259]. •Valid as Trichomycterus fassli (Steindachner 1915) -- (Burgess 1989:322 [ref. 12860], Fernández 2000:32 [ref. 26195], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Fernández 2005:123 [ref. 29374], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:418 [ref. 29155], Sarmiento et al. 2014:193 [ref. 35004]). Current status: Valid as Trichomycterus fassli (Steindachner 1915). Trichomycteridae: Trichomycterinae. Distribution: Songo River basin, western Amazon basin, Bolivia. Habitat: freshwater.

ferreri, Trichomycterus Ardila Rodríguez [C. A.] 2018:15, Fig. 8 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Río Villeta, municipio de Villeta, Departamento de Cundinamarca, Colombia, elevation 877 meters. Holotype: CAR 807. Paratypes: CAR. •Valid as Trichomycterus ferreri Ardila Rodríguez 2018 -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386]). Current status: Valid as Trichomycterus ferreri Ardila Rodríguez 2018. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Villeta basin, Departamento de Cundinamarca, Colombia. Habitat: freshwater.

florense, Pygidium Miranda Ribeiro [P. de] 1943:1, Fig. [Boletim do Museu Nacional do Rio de Janeiro, Zoologia, Nova Série No. 9; ref. 10390] Rio das Flores, near Ipiabas, Estado do Rio de Janeiro, Brazil. Holotype (unique): MNRJ 3751. Type catalog: Miranda Ribeiro 1954:9 [ref. 21988] as florence, Ferraris 2007:414 [ref. 29155]. Also appeared in Miranda Ribeiro 1944:1 [ref. 9906]. •Valid as Trichomycterus florense (Miranda Ribeiro 1943) -- (Burgess 1989:322 [ref. 12860], Bizerril 1994:623 [ref. 22673], Bockmann et al. 2004:227 [ref. 27855]). •Synonym of Trichomycterus alternatus (Eigenmann 1917) -- (de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Ferraris 2007:414 [ref. 29155]). •Synonym of Trichomycterus santaeritae (Eigenmann 1918) -- (Costa et al. 2020:2923 [ref. 37529]). •Valid as Trichomycterus florensis (Miranda Ribeiro 1943) -- (Barbosa & Costa 2010:120 [ref. 30782], Barbosa & Costa 2011:308 [ref. 31672], Barbosa & Costa 2012:82 [ref. 31901], Reis & de Pinna 2022:23 [ref. 39360], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus florensis (Miranda Ribeiro 1943). Trichomycteridae: Trichomycterinae. Distribution: South America: Rio das Flores drainage, Rio de Janeiro State (Brazil). IUCN (2025): Not Assessed. Habitat: freshwater.

fuliginosus, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2010:108, Figs. 2a, 4, 15 [Ichthyological Exploration of Freshwaters v. 21 (no. 2); ref. 30782] Ribeirão da Rifa, tributary of Rio Santíssimo, Rio Grande drainage, Rio Paraíba do Sul basin, ca. 21°56'S, 41°57'W, Município de Santa Maria Madalena, Estado de Rio de Janeiro, Brazil, elevation about 800 meters. Holotype: UFRJ 6029. Paratypes: UFRJ 718 (5), 3248 (1), 18177 (4 c&s) •Valid as Trichomycterus fuliginosus Barbosa & Costa 2010 -- (Barbosa & Katz 2016:262 [ref. 34950], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus fuliginosus Barbosa & Costa 2010. Trichomycteridae: Trichomycterinae. Distribution: South America: Paraíba do Sul River basin, Rio de Janeiro state (Brazil). IUCN (2024): Data Deficient. Habitat: freshwater.

funebris, Trichomycterus Katz [A. M.] & Costa [W. J. E. M.] in Costa & Katz 2021:10, Figs. 2B, 2L, 3G-H, 4B, 4L [Systematics and Biodiversity v. 19 (no. 6); ref. 38252] Upper Rio das Mortes close to secondary road near the road MG-132 and the village of Nossa Senhora das Dores, Rio Grande drainage, Rio Paraná basin, Município de Barbacena, Estado de Minas Gerais, Brazil, 21°12'31"S, 43°36'57"W, elevation ca. 1100 meters. Holotype: UFRJ 10216. Paratypes: MZUSP, UFRJ. •Valid as Trichomycterus funebris Katz & Costa 2021 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus funebris Katz & Costa 2021. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio das Mortes subdrainage, Rio Grande drainage, Rio Paraná basin (Minas Gerais, Brazil). Habitat: freshwater.

gabrieli, Pygidium Myers [G. S.] 1926:151 [Copeia No. 156; ref. 12337] Rock pools below rapids of São Gabriel, Rio Negro, Amazon system, Brazil. Syntypes: CAS 64583 (4), CAS-SU 36556 (1). Type catalog: Böhlke 1953:45 [ref. 12291], Ferraris 2007:418 [ref. 29155] •Valid as Trichomycterus gabrieli (Myers 1926) -- (Burgess 1989:322 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Ferraris 2007:418 [ref. 29155]). Current status: Valid as Trichomycterus gabrieli (Myers 1926). Trichomycteridae: Trichomycterinae. Distribution: Upper Negro River basin, Brazil. Habitat: freshwater.

gairaensis, Trichomycterus Ardila Rodríguez [C. A.] 2018:8, Fig. 2 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Río Gaira, municipio de Santa Marta, Sierra Nevada de Santa Marta, Departamento del Magdalena, Colombia. Holotype: CAR 783. Paratypes: CAR, CZUT-IC. •Valid as Trichomycterus gairaensis Ardila Rodríguez 2018. Current status: Valid as Trichomycterus gairaensis Ardila Rodríguez 2018. Trichomycteridae: Trichomycterinae. Distribution: Río Gaira drainange, Departamento del Magdalena, Colombia. Habitat: freshwater.

galvisi, Trichomycterus Ardila Rodríguez [C. A.] 2024:8, Figs. 1, 5A, 7A, 8B [Barranquilla, Departamento del Atlántico No. 98; ref. 41346] Cueva de La Vaca, municipio de Curití, Departamento de Santander, Colombia. Holotype: CAR 1028. Paratypes: CAR 43 (9). •Valid as Trichomycterus galvisi Ardila Rodríguez 2024. Current status: Valid as Trichomycterus galvisi Ardila Rodríguez 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Cueva de La Vaca, municipio de Curití, Santander, Colombia. Habitat: freshwater.

gambitaensis, Trichomycterus Ardila Rodríguez [C. A.] 2023:10, Figs. 3, 5B, 6B, 7B, 8B, 9B [Barranquilla, Departamento del Atlántico No. 90; ref. 40647] Río Huertas, afluente del río Tolotá, cuenca del Río Suárez, municipio de Gámbita, Departamento de Santander, Colombia, elevation 1915 meters. Holotype: CAR 999. Paratypes: CAR 994 (6). •Valid as Trichomycterus gambitaensis Ardila Rodríguez 2023 -- (Ardila Rodríguez 2025:5 [ref. 42104]). Current status: Valid as Trichomycterus gambitaensis Ardila Rodríguez 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Tolotá drainage, Río Suárez basin, Santander, Colombia. Habitat: freshwater.

garbei, Trichomycterus (Cryptocambeva) Costa [W. J. E. M.], Azevedo-Santos [V. M.] & Katz [A. M.] in Costa, Azevedo-Santos, Mattos & Katz 2023:7, Figs. 4, 5A, 6A, 7A [Fishes v. 8 (no. 4): 206; ref. 40170] Stream tributary of Rio Canoas, which is a tributary of Rio Grande at Estreito dam, road Cristais Paulista to Mascarenhas, Cristais Paulista municipality, São Paulo State, Brazil, 20°18'07"S, 47°18'45"W, elevation about 715 meters. Holotype: UFRJ 12917. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus garbei Costa, Azevedo-Santos & Katz 2023 Current status: Valid as Trichomycterus garbei Costa, Azevedo-Santos & Katz 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Canoas subdrainage, middle Rio Grande drainage, upper Paraná River basin, São Paulo State, Brazil. Habitat: freshwater.

garciamarquezi, Trichomycterus Ardila Rodríguez [C. A.] 2016:13, Figs. 5E, 6B, 9 [No. 2; ref. 35108] Río Tucurinca, parte baja, Sierra Nevada de Santa Maria, municipio de Tucurinca, Departamento del Magdalena, Colombia. Holotype: CAR 682. Paratypes: CAR, IAvH-P, ICNMHN. •Valid as Trichomycterus garciamarquezi Ardila Rodríguez 2016 -- (Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:11 [ref. 35926], DoNascimiento & Prada-Pedreros 2020:12 [ref. 37386]). Current status: Valid as Trichomycterus garciamarquezi Ardila Rodríguez 2016. Trichomycteridae: Trichomycterinae. Distribution: Río Tucurinca basin, Departamento del Magdalena, Colombia. Habitat: freshwater.

gasparinii, Trichomycterus Barbosa [M. A.] 2013:272, Figs. 3-4 [Vertebrate Zoology v. 63 (no. 3); ref. 33106] Estado do Espírito Santo, Município de Fundão, stream around the Park Goiapaba-Açu, tributary of rio Reis Magos basin, 19°54'60"S, 40°27'86"W, [probably 19°55'30"S, 40°27'28"W], Brazil, altitude about 660 meters. Holotype: UFRJ 8157. Paratypes: UFRJ. •Valid as Trichomycterus gasparinii Barbosa 2013 -- (Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus gasparinii Barbosa 2013. Trichomycteridae: Trichomycterinae. Distribution: South America: stream around the Park Goiapaba-Açu, Espírito Santo (Brazil). Habitat: freshwater.

giarettai, Trichomycterus Barbosa [M. A.] & Katz [A. M.] 2016:262, Fig. 1 [Vertebrate Zoology v. 66 (no. 3); ref. 34950] Small stream tributary of the rio Parnaíba, Rio Parnaíba basin, Município de Cumari, Estado de Goias, Brazil, circa 18°22’52’’S, 48°06’56’’W, elevation about 590 meters. Holotype: UFRJ 10109. Paratypes: UFRJ. •Valid as Trichomycterus giarettai Barbosa & Katz 2016 -- (Costa et al. 2022:162 [ref. 39290]). Current status: Valid as Trichomycterus giarettai Barbosa & Katz 2016. Trichomycteridae: Trichomycterinae. Distribution: Upper Rio Parnaíba basin, Goias, Brazil. Habitat: freshwater.

giganteus, Trichomycterus Lima [S. M. Q.] & Costa [W. J. E. M.] 2004:2, Fig. 1 [Zootaxa No. 761; ref. 27979] Rio Guandu-Mirim, Rio Guandu basin, Campo Grande, Município do Rio de Janeiro, Estado do rio de Janeiro, Brazil. Holotype: UFRJ 5999. Paratypes: MCP 35028 (4); UFRJ 5399 (4), 5730 (10), 5732 (2 c&s), 5733 (2 c&s). Type catalog: Ferraris 2007:418 [ref. 29155]. •Valid as Trichomycterus giganteus Lima & Costa 2004 -- (Ferraris 2007:418 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], García-Melo et al. 2016:237 [ref. 34471], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus giganteus Lima & Costa 2004. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Guandu River basin, Serra do Mendanha, Rio de Janeiro State (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

gironensis, Trichomycterus Ardila Rodríguez [C. A.] 2018:17, Fig. 10 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Río de Oro, parte alta del río Legrija, Vereda de Chocoita, municipio de Girón, Departamento de Santander, Colombia, 7°04'23"N, 73°10'05"O, elevation 777 meters. Holotype: CAR 808. Paratypes: CAR. •Valid as Trichomycterus gironensis Ardila Rodríguez 2018 -- (Ardila Rodríguez 2023:7 [ref. 40609]). •Synonym of Trichomycterus ruitoquensis Ardila Rodríguez 2007 -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386]). Current status: Synonym of Trichomycterus ruitoquensis Ardila Rodríguez 2007. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

goeldii, Trichomycterus Boulenger [G. A.] 1896:154 [Annals and Magazine of Natural History (Series 6) v. 18 (no. 104) (art. 23); ref. 14603] Brooks at Colonia Alpina, Organ Mts., Rio de Janeiro State, Brazil, elevation nearly 2600 feet. Syntypes: BMNH 1896.4.4.7-8 (2). Type catalog: Ferraris 2007:418 [ref. 29155]. •Valid as Trichomycterus goeldii Boulenger 1896 -- (Burgess 1989:322 [ref. 12860], Bizerril 1994:623 [ref. 22673], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:418 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], Barbosa & Costa 2011:308 [ref. 31672], Reis & de Pinna 2022:90 [ref. 39360], Costa et al. 2022:513 [ref. 39820] in subgenus Psammocambeva, Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus goeldii Boulenger 1896. Trichomycteridae: Trichomycterinae. Distribution: South America: Paraíba do Sul basin, Rio de Janeiro State (Brazil). IUCN (2021): Data Deficient. Habitat: freshwater.

gorgona, Trichomycterus Fernández [L.] & Schaefer [S. A.] 2005:69, Figs. 1-3 [Copeia 2005 (no. 1); ref. 28090] Freshwatrer stream near northeastern end of Isla Gorgona, 2°59'N, 78°11'30"W, Dept. Cauca, Colombia. Holotype: ANSP 149946. Paratypes: ICNMHN 10019 (1). Type catalog: Ferraris 2007:418 [ref. 29155], Mojica & Agudelo-Zamora 2018:39 [ref. 36127]. •Valid as Trichomycterus gorgona Fernández & Schaefer 2005 -- (Ferraris 2007:418 [ref. 29155], Rizzato et al. 2011:485 [ref. 31516], Bichuette & Rizzato 2012:52 [ref. 32163], DoNascimiento et al. 2017:69 [ref. 35633]). Current status: Valid as Trichomycterus gorgona Fernández & Schaefer 2005. Trichomycteridae: Trichomycterinae. Distribution: Gorgona Island, Pacific coast of Colombia. Habitat: freshwater.

gracilis, Trichomycterus Valenciennes [A.] in Cuvier & Valenciennes 1846:497 [Histoire naturelle des poissons v. 18; ref. 1011] Río Azangaro near Guasacona, Río Guatanai near Cusco, Río Pontezualo near Coroico, Compucila west of Cuzco, Peru, elevation 14,000 feet. Syntypes: MNHN 0000-3129 (2) Río Pontezualo, 0000-4063 (2) Río Azangaro, A-9766 (6) Río Guatanai, B-0588 (2) Compucila. Type catalog: Bertin & Estève 1950:61 [ref. 19575], Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus gracilis Valenciennes 1846 -- (Arratia 1998:354 [ref. 23661]). •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:422 [ref. 29155]). Current status: Synonym of Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

guacamayoensis, Trichomycterus Ardila Rodríguez [C. A.] 2018:5, Figs. 1-3, 5-9 [Barranquilla, Departamento del Atlántico No. 11; ref. 35926] Cueva La Guacamaya, Vereda Yariguíes, cuenca Río Suárez, Municipio El Guacamayo, Departamento de Santander, Colombia, 06°14'56"N, 73°29'56"W, elevation 1950 meters. Holotype: CAR 795. Paratypes: CAR, IAvH. •Valid as Trichomycterus guacamayoensis Ardila Rodríguez 2018 -- (Mesa S. et al. 2018:110 [ref. 35987], Ardila Rodríguez 2023:5 [ref. 40606], Ardila Rodríguez 2023:7 [ref. 40609], Ardila Rodríguez 2025:5 [ref. 42104]). •Synonym of Trichomycterus latistriatus (Eigenmann 1917) -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386]). Current status: Synonym of Trichomycterus latistriatus (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Habitat: freshwater.

guianensis, Pygidium Eigenmann [C. H.] 1909:11 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1222] Aruataima Falls, upper Potaro River, Guyana. Holotype: FMNH 52676 [ex CM 1003]. Paratypes: FMNH 53721 (1), CAS 58257 [ex IU 11710] (1). Type catalog: Henn 1928:80 [ref. 12305], Ibarra & Stewart 1987:72 [ref. 12367], Ferraris 2007:418 [ref. 29155]. •Valid as Trichomycterus guianensis (Eigenmann 1909) (often as guianense) -- (Burgess 1989:322 [ref. 12860], Fernández & Bichuette 2002:274 [ref. 26539], Lasso & Provenzano 2003:1146 [ref. 26951], de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Ferraris 2007:418 [ref. 29155], Taphorn et al. 2022:57 [ref. 41297], Akin et al. 2024:603 [ref. 41787]), Current status: Valid as Trichomycterus guianensis (Eigenmann 1909). Trichomycteridae: Trichomycterinae. Distribution: South America: coastal river drainages (French Guiana, Guyana and Venezuela). Habitat: freshwater.

hatoensis, Trichomycterus Ardila Rodríguez [C. A.] 2025:4, Figs. 1-6 [Barranquilla, Departamento del Atlántico No. 101; ref. 42104] Quebrada La Vega, Cueca baja del río Suárez, municipio de Hato, Departamento de Santander, Colombia. Holotype: CAR 1033. Paratypes: CAR 787 (16). •Valid as Trichomycterus hatoensis Ardila Rodríguez 2025. Current status: Valid as Trichomycterus hatoensis Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Suárez River drainage, Departamento de Santander, Colombia. Habitat: freshwater.

heterodontum, Pygidium Eigenmann [C. H.] 1917:692 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Río Mendoza, Palmira, Argentina, elevation 900 meters. Holotype (unique): CAS 58139 [ex IU 13832]. Type catalog: Ferraris 2007:418 [ref. 29155]. •Valid as Trichomycterus heterodontum (Eigenmann 1917) -- (Burgess 1989:322 [ref. 12860], Fernández 2000:32 [ref. 26195], Miquelarena & Fernández 2000:44 [ref. 27633], López et al. 2002:60 [ref. 26808], López et al. 2003:40 [ref. 27366], Menni 2004:82 [ref. 28131]). •Valid as Trichomycterus heterodontus (Eigenmann 1917) -- (de Pinna & Wosiacki in Reis et al. 2003:281 [ref. 27061], Ferraris 2007:418 [ref. 29155] dated 1918, Sarmiento et al. 2014:193 [ref. 35004], Mirande & Koerber 2015:38 [ref. 35117]). Current status: Valid as Trichomycterus heterodontus (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: Mendoza River basin, Argentina and Bolivia. Habitat: freshwater.

hualco, Trichomycterus Fernández [L.] & Vari [R. P.] 2009:195, Fig. 1 [Copeia 2009 (no. 1); ref. 30062] Río Hualco, 28°35'S, 67°11'W, Departamento San Blas de los Sauces, Provincia de La Rioja, Argentina, elevation 2000 meters. Holotype: FML 2601. Paratypes: FML 2602 (20), MCMI [MCNI] 1467 (1), USNM 383794 (4, 1 c&s). •Valid as Trichomycterus hualco Fernández & Vari 2009 -- (Koerber 2011:4 [ref. 31122], Koerber 2014:8 [ref. 33621], Mirande & Koerber 2015:38 [ref. 35117], García-Melo et al. 2016:237 [ref. 34471]). Current status: Valid as Trichomycterus hualco Fernández & Vari 2009. Trichomycteridae: Trichomycterinae. Distribution: La Rioja Province, Argentina. Habitat: freshwater.

humboldti, Trichomycterus Costa [W. J. E. M.] & Katz [A. M.] 2021:12, Figs. 2C, 3I-J, 4C, 4I, 4M [Systematics and Biodiversity v. 19 (no. 6); ref. 38252] Small stream tributary to Córrego Paranhos, about 1.2 km from the road Mirantão-Santo Antônio, upper Rio Grande drainage, Rio Paraná basin, Município de Bocaina de Minas, Estado de Minas Gerais, Brazil, 22°12'34"S, 44°29' 18"W, elevation 1,180 meters. Holotype: UFRJ 10218. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus humboldti Costa & Katz 2021 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus humboldti Costa & Katz 2021. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Grande drainage, Rio Paraná basin (Minas Gerais, Brazil). Habitat: freshwater.

illuvies, Trichomycterus Reis [V. J. C.] & de Pinna [M. C. C.] 2022:51, Fig. 24 [Zoological Journal of the Linnean Society v. 197 (no. 2); ref. 39360] Rio Santo Antônio at bridge in town of Ferros, tributary of Rio Doce, Ferros, Minas Gerais, Brazil, 19°13'34.50"S, 43°1'9.50"W. Holotype: MZUSP 112750. Paratypes: MZUSP 126758 (10), 110720 (1). •Valid as Trichomycterus illuvies Reis & de Pinna 2022 -- (Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus illuvies Reis & de Pinna 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Doce drainage, Minas Gerais (Brazil). Habitat: freshwater.

immaculatum, Pygidium Eigenmann [C. H.] & Eigenmann [R. S.] 1889:52 [Proceedings of the California Academy of Sciences (Series 2) v. 2; ref. 1253] Rio São Matheos, Rio Doce basin, Espírito Santo, Brazil. Lectotype: MCZ 8302. Paralectotypes: MCZ 8266 (1), 8300 (10), 8305 (1), 8307 (1) and more. Type catalog: Ferraris 2007:419 [ref. 29155]. Lectotype selected by Reis & de Pinna 2022:60 [ref. 39360]. •Valid as Trichomycterus immaculatum [sometimes as immaculatus] (Eigenmann & Eigenmann 1889) -- (Burgess 1989:322 [ref. 12860], Bizerril 1994:623 [ref. 22673], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061]). •Synonym of Trichomycterus travassosi (Miranda Ribeiro 1949) -- (Bizerril 1994:623 [ref. 22673], Bockmann et al. 2004:227 [ref. 27855], Maldonado-Ocampo & Albert 2004:5 [ref. 27978], Lima & Costa 2004:3 [ref. 27979]). •Valid as Trichomycterus immaculatus (Eigenmann & Eigenmann 1889) -- (Ferraris 2007:419 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], Fernández et al. 2015:11 [ref. 35041] as inmaculatus, García-Melo et al. 2016:237 [ref. 34471], Costa et al. 2020:2916 [ref. 37529], Donin et al. 2020:16 [ref. 37395], dos Reis et al. 2020:7 [ref. 37862], Costa et al. 2020:81 [ref. 38088], Reis & de Pinna 2022:55 [ref. 39360], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus immaculatus (Eigenmann & Eigenmann 1889). Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Doce and adjacent basins, Minas Gerais and Rio de Janeiro (Brazil). Habitat: freshwater.

incae, Trichomycterus Valenciennes [A.] in Cuvier & Valenciennes 1846:496 [Histoire naturelle des poissons v. 18; ref. 1011] Río Guatanai at Cuzco, Peru. Syntypes: MNHN A-8986 (1). Type catalog: Bertin & Estève 1950:61 [ref. 19575], Ferraris 2007:423 [ref. 29155]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155]). Current status: Synonym of Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

ingaiensis, Trichomycterus Katz [A. M.] & Costa [W. J. E. M.] in Costa & Katz 2021:14, Figs. 2D, 2M, 3K-L, 4D, 4N [Systematics and Biodiversity v. 19 (no. 6); ref. 38252] Ribeirão Malha Feijão, a tributary of the Rio Ingaí, road between Itumirim and Ingaí, Rio Grande drainage, Rio Paraná basin, Município de Ingaí, Estado de Minas Gerais, Brazil, 21°21'35"S, 44°54'05"W, elevation 875 meters. Holotype: UFRJ 10214. Paratypes: CICCAA, MZUSP, UFRJ. •Valid as Trichomycterus ingaiensis Katz & Costa 2021 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus ingaiensis Katz & Costa 2021. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Ingaí subdrainage, Rio Grande drainage, Rio Paraná basin (Minas Gerais, Brazil). Habitat: freshwater.

ipatinga, Trichomycterus Reis [V. J. C.] & de Pinna [M. C. C.] 2022:65, Figs. 7, 29 [Zoological Journal of the Linnean Society v. 197 (no. 2); ref. 39360] Meloso Creek, tributary Rio Santo Antônio, Conceição do Mato Dentro, Minas Gerais, Brazil, 19°4'35.98"S, 43°20'28.84"W. Holotype: MZUSP 112279. Paratypes: MBML, MNRJ, MZUSP. •Valid as Trichomycterus ipatinga Reis & de Pinna 2022 -- (Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:50 [ref. 41258]). Current status: Valid as Trichomycterus ipatinga Reis & de Pinna 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Doce drainage, Minas Gerais (Brazil). Habitat: freshwater.

itacambirussu, Trichomycterus Triques [M. L.] & Vono [V.] 2004:165, Fig. 2 [Ichthyological Exploration of Freshwaters v. 15 (no. 2); ref. 27798] Córrego do Cabral, 42°45'W, 16°33'S, drainage of Rio Itacambiruçu, Rio Jequitinhonha basin, County of Grão Mogol, Minas Gerais State, Brazil. Holotype: MZUSP 58493. Paratypes: DZUFMG 001 (2), 002 (1); MZUSP 58494-95 (1, 3). Type catalog: Ferraris 2007:419 [ref. 29155]. •Valid as Trichomycterus itacambirussu Triques & Vono 2004 -- (Ferraris 2007:419 [ref. 29155], Barbosa & Costa 2011:308 [ref. 31672], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus itacambirussu Triques & Vono 2004. Trichomycteridae: Trichomycterinae. Distribution: South America: Jequitinhonha River basin, Minas Gerais State (Brazil). Habitat: freshwater.

itacarambiensis, Trichomycterus Trajano [E.] & de Pinna [M. C. C.] 1996:86, Figs. 1-2 [Revue française d'Aquariologie Herpétologie v. 23 (no. 3/4); ref. 22915] Creek inside Olhos d'Agua cave, Município de Itacarambi, Minas Gerais State, Brazil, 15°06'06"S, 44°09'30"W. Holotype: MZUSP 42469. Paratypes: MZUSP 50548 (4, 2 albino, 2 pigmented), 50549 (2, pigmented), 50550-52 (1, 1, 1, pigmented), 50553-54 (1, 1, albino), 50555-59 (1, 1, 1, 1, 1, pigemented), 50560-61 (1, 1, albino), 50562-66 (1, 1, 1, 1, 1, pigmented). Type catalog: Ferraris 2007:419 [ref. 29155]. •Valid as Trichomycterus itacarambiensis Trajano & de Pinna 1996 -- (de Pinna 1998:297 [ref. 23847], Romero & Paulson 2001:28 [ref. 26040], Fernández & Bichuette 2002:274 [ref. 26539], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Sazima 2004:49 [ref. 27666], Bockmann et al. 2004:227 [ref. 27855], Bichuette & Trajano 2004:243 [ref. 27856], Ardila Rodríguez 2006:7 [ref. 28863], Proudlove 2006:146 [ref. 28992], Castellanos-Morales 2007:49 [ref. 29323], Ferraris 2007:419 [ref. 29155], Rizzato et al. 2011:478 [ref. 31516], Bichuette & Rizzato 2012:49 [ref. 32163]). Current status: Valid as Trichomycterus itacarambiensis Trajano & de Pinna 1996. Trichomycteridae: Trichomycterinae. Distribution: Olhos d'Agua cave, Minas Gerais State, Brazil. Habitat: freshwater.

itatiayae, Trichomycterus brasiliensis var. Miranda Ribeiro [A. de] 1906:p.? [15], Pl. 1 (figs. a-c) [Arquivos do Museu Nacional de Rio de Janeiro v. 13; ref. 17762] Ribeirão da Tapera, Mont-Serrat, Itatiaia, about 22°27'S, 44°50'W, Rio de Janeiro State, Brazil, elevation about 800 meters. Lectotype: MNRJ 792. Paralectotypes: MNRJ 11346-47 (2). Type catalog: Ferraris 2007:419 [ref. 29155]. On p. 15 of separate. Lectotype selected by Caramaschi & Caramaschi 1991:223 [ref. 20026]. •Valid as Trichomycterus itatiayae Miranda Ribeiro 1906 -- (Burgess 1989:322 [ref. 12860], Caramaschi & Caramaschi 1991:223 [ref. 20026], Bizerril 1994:623 [ref. 22673] as itatyae, de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:419 [ref. 29155], Barbosa & Costa 2008:181 [ref. 29961], Barbosa & Costa 2010:121 [ref. 30782], Barbosa & Costa 2010:194 [ref. 31070], Datovo et al. 2012:35 [ref. 31994], Katz & Barbosa 2014:3 [ref. 33418], García-Melo et al. 2016:238 [ref. 34471], Donin et al. 2020:16 [ref. 37395], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662], Silva-Sene et al. 2024:4 [ref. 41784] as aff. itatiayae). Current status: Valid as Trichomycterus itatiayae Miranda Ribeiro 1906. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Paraíba do Sul River basin, Rio de Janeiro State (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

jacupiranga, Trichomycterus Wosiacki [W. B.] & Oyakawa [O. T.] 2005:469, Figs. 5-6 [Neotropical Ichthyology v. 3 (no. 4); ref. 28451] Cajati, Parque Estadual de Jacupiranga, rio do Queimado, São Paulo State, Brazil. Holotype: MZUSP 67818. Paratypes: MZUSP 67819 (1), 67820 (1), 67821 (1), 67822 (1), 84095 (1) Type catalog: Ferraris 2007:419 [ref. 29155]. •Valid as Trichomycterus jacupiranga Wosiacki & Oyakawa 2005 -- (Ferraris 2007:419 [ref. 29155], Barbosa & Costa 2011:308 [ref. 31672], García-Melo et al. 2016:237 [ref. 34471], Donin et al. 2020:14 [ref. 37395], Costa et al. 2022:512 [ref. 39820] in subgenus Psammocambeva, Vilardo et al. 2023:363 [ref. 40216], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus jacupiranga Wosiacki & Oyakawa 2005. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Ribeira de Iguape and several coastal basins, São Paulo and Rio de Janeiro states (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

jequitinhonhae, Trichomycterus Triques [M. L.] & Vono [V.] 2004:167, Fig. 3 [Ichthyological Exploration of Freshwaters v. 15 (no. 2); ref. 27798] Córrego Laranjeiras, 42°18'W, 16°45'S, Rio Jequitinhonha basin, County of Coronel Murta, Minas Gerais State, Brazil. Holotype: MZUSP 58497. Paratypes: DZUFMG 003 (16), 004 (78); MZUSP 58498-99 (30, 15). Type catalog: Ferraris 2007:419 [ref. 29155]. •Valid as Trichomycterus jequitinhonhae Triques & Vono 2004 -- (Ferraris 2007:419 [ref. 29155], Barbosa & Costa 2011:308 [ref. 31672], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus jequitinhonhae Triques & Vono 2004. Trichomycteridae: Trichomycterinae. Distribution: South America: Jequitinhonha River basin, Minas Gerais State (Brazil). Habitat: freshwater.

kankuamo, Trichomycterus Ardila Rodríguez [C. A.] 2016:11, Figs. 5D, 8 [No. 2; ref. 35108] Arroyo Blanco, eco-parque "Los Besotes", municipio de Valledupar, Departamento del Cesar, Colombia, 10°35'N, 73°15'W. Holotype: CAR 685. Paratypes: CAR, IAvH-P. •Valid as Trichomycterus kankuamo Ardila Rodríguez 2016 -- (DoNascimiento et al. 2017:69 [ref. 35633], Ardila Rodríguez 2018:11 [ref. 35926], DoNascimiento & Prada-Pedreros 2020:12 [ref. 37386]). Current status: Valid as Trichomycterus kankuamo Ardila Rodríguez 2016. Trichomycteridae: Trichomycterinae. Distribution: Reserva Natural "Los Besotes", Departamento del Cesar, Colombia. Habitat: freshwater.

knerii, Trichomycterus Steindachner [F.] 1882:142 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 19 (no. 16) (for 22 June 1882); ref. 20485] Canelos, eastern Ecuador. Syntypes: (several) NMW 43328 (1). Type catalog: Ferraris 2007:419 [ref. 29155]. Species later illustrated and described in more detail in Steindachner 1882:81 [p. 21 in separate], Pl. 5 (figs. 1-1a) [ref. 4233]. •Valid as Trichomycterus knerii Steindachner 1882 -- (Ovchynnyk 1967:36 [ref. 37559] as kneri, Burgess 1989:322 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Ferraris 2007:419 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], DoNascimiento et al. 2017:69 [ref. 35633], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" knerii). Current status: Valid as Trichomycterus knerii Steindachner 1882. Trichomycteridae: Trichomycterinae. Distribution: South America: Orinoco River basin (Colombia and Ecuador). Habitat: freshwater.

landinga, Trichomycterus Triques [M. L.] & Vono [V.] 2004:162, Fig. 1 [Ichthyological Exploration of Freshwaters v. 15 (no. 2); ref. 27798] Córrego Moquém, 42°35'W, 16°45'S, Rio Jequitinhonha basin, County of Coronel Murta, Minas Gerais State, Brazil. Holotype (unique): MZUSP 58496. Type catalog: Ferraris 2007:419 [ref. 29155]. •Valid as Trichomycterus landinga Triques & Vono 2004 -- (Ferraris 2007:419 [ref. 29155], Barbosa & Costa 2011:308 [ref. 31672], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus landinga Triques & Vono 2004. Trichomycteridae: Trichomycterinae. Distribution: South America: Jequitinhonha River basin, Minas Gerais State (Brazil). Habitat: freshwater.

largoperculatus, Trichomycterus Costa [W. J. E. M.] & Katz [A. M.] 2022:14, Figs. 1-4 [Zoosystematics and Evolution v. 98 (no. 1); ref. 38971] Rio Paraíba do Sul just below Ilha dos Pombos Dam, Município de Além Paraíba, Rio de Janeiro State, Brazil, 21°50'36"S, 42°34'46"W, elevation about 105 meters. Holotype: UFRJ 6987. Paratypes: (12) CICCAA, UFRJ. •Valid as Trichomycterus largoperculatus Costa & Katz 2022 -- (Costa et al. 2022:512 [ref. 39820] in subgenus Psammocambeva, Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus largoperculatus Costa & Katz 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: middle Rio Paraíba do Sul drainage, Rio de Janeiro State (southeastern Brazil). IUCN (2025): Not Assessed. Habitat: freshwater.

latidens, Pygidium Eigenmann [C. H.] 1917:693 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Small creek near mouth of Río Colima River, Colombia. Holotype (unique): CAS 76335 [ex IU 13801]. Type catalog: Ferraris 2007:420 [ref. 29155]. •Valid as Trichomycterus latidens (Eigenmann 1917) -- (Burgess 1989:322 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Fernández & Schaefer 2005:73 [ref. 28090], Ferraris 2007:419-421 [ref. 29155], Castellanos-Morales 2008:312 [ref. 29836], DoNascimiento et al. 2017:69 [ref. 35633]). Current status: Valid as Trichomycterus latidens (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: Calima River basin, Colombia. Habitat: freshwater.

latistriatum, Pygidium Eigenmann [C. H.] 1917:696 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Quebrada de Pinchote, Santander, Colombia. Holotype (unique): FMNH 58449 [ex CM 7450]. Type catalog: Henn 1928:80 [ref. 12305], Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:420 [ref. 29155]. •Valid as Trichomycterus latistriatus (Eigenmann 1917) -- (Burgess 1989:322 [ref. 12860] as latistriatum, de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Ferraris 2007:420 [ref. 29155] dated 1918, Ardila Rodríguez 2007:[9] [ref. 29569], Castellanos-Morales 2008:312 [ref. 29836], Ardila Rodríguez 2011:10 [ref. 31409], Ardila Rodríguez 2011:21 [ref. 31410], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:12 [ref. 34399] as latistriatum, García-Melo et al. 2016:237 [ref. 34471], Ardila Rodríguez 2016:16 [ref. 35108] as latistriatum, Ardila Rodríguez 2017:11 [ref. 35579] as latistriatum, DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926] as latistriatum, Castellanos-Morales 2018:127 [ref. 35988], DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386], Ardila Rodríguez 2023:7 [ref. 40609] as latistriatum). Current status: Valid as Trichomycterus latistriatus (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: South America: Magdalena River basin, Colombia. Habitat: freshwater.

laucaensis, Trichomycterus Arratia [G.] 1983:74, Fig. 8 [Studies on Neotropical Fauna and Environment v. 18 (no. 2); ref. 8378] Río Lauca system, Parinacota, northern Chile, elevation 4390 meters. Holotype: FFSUC IC 160878A. Paratypes: FFSUC IC 160878B, 190579A, 190579B, 280878A, 280878B. Type catalog: Ferraris 2007:420 [ref. 29155]. •Valid as Trichomycterus laucaensis Arratia 1983 -- (Burgess 1989:322 [ref. 12860], Pequeño 1989:41 [ref. 14125], Dyer 2000:84 [ref. 26678], Fernández & Vari 2000:993 [ref. 25017], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Fernádez & Schaefer 2003:357 [ref. 27407], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:420 [ref. 29155], García-Melo et al. 2016:237 [ref. 34471], Mesa S. et al. 2018:110 [ref. 35987]). Current status: Valid as Trichomycterus laucaensis Arratia 1983. Trichomycteridae: Trichomycterinae. Distribution: Lauca River basin, Chile. Habitat: freshwater.

lauryi, Trichomycterus Donin [L. M.], Ferrer [J.] & Carvalho [T. P.] 2020:3, Figs. 1-2, 10 [Journal of Fish Biology v. 96 (no. 4); ref. 37395] Córrego do Queimado, stream tributary of rio Jacupiranguinha, Ribeira de Iguape River basin, Cajati, São Paulo State, Brazil, 24°48'07"S, 48°13'47"W. Holotype: UFRGS 27000. Paratypes: MNRJ, MZUSP, UFRGS. •Valid as Trichomycterus lauryi Donin, Ferrer & Carvalho 2020 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus lauryi Donin, Ferrer & Carvalho 2020. Trichomycteridae: Trichomycterinae. Distribution: South America: Ribeira de Iguape River basin (São Paulo State, Brazil). Habitat: freshwater.

lauzannii, Trichomycterus Miranda [G.] & Fernández [L.] 2020:459, Figs. 1-2 [Copeia v. 108 (no. 3); ref. 37703] Echuramara stream, tributary of the Río Macharaipo, Beni basin, Madidi protected area [corrected], Departamento La Paz, Provincia de Franz Tamayo, Bolivia, 14°41'06"S, 68°15'33"W, elevation 1875 meters. Holotype: CBF 15025. Paratypes: CBF 15026 (8). •Valid as Trichomycterus lauzannii Miranda & Fernández 2020. Current status: Valid as Trichomycterus lauzannii Miranda & Fernández 2020. Trichomycteridae: Trichomycterinae. Distribution: Macharaipo River drainage, Beni basin, Provincia de Franz Tamayo, Bolivia. Habitat: freshwater.

lewi, Trichomycterus Lasso [C. A.] & Provenzano [F.] 2003:1144, Figs. 7, 2B-6B [Revista de Biología Tropical v. 50 (no. 3-4) [for 2002]; ref. 26951] Río Kukenán, cabeceras, valle between los tepuyes Roraima and Kukenán, Gran Sabana, 5°06'30"N, 60°49'48"W, Estado Bolívar, Venezuela. Holotype: MHNLS 6454. Paratypes: MBUCV-V-29601 (2); MHNLS 6466 (2), 7485 (2), 13319 (5). Type catalog: Ferraris 2007:420 [ref. 29155]. •Valid as Trichomycterus lewi Lasso & Provenzano 2003 -- (Ferraris 2007:420 [ref. 29155], García-Melo et al. 2016:237 [ref. 34471]). Current status: Valid as Trichomycterus lewi Lasso & Provenzano 2003. Trichomycteridae: Trichomycterinae. Distribution: Kukenán River, Caroni River basin, Bolívar, Venezuela. Habitat: freshwater.

listruroides, Trichomycterus (Cryptocambeva) Costa [W. J. E. M.], Katz [A. M.] & Azevedo-Santos [V. M.] in Costa, Azevedo-Santos, Mattos & Katz 2023:12, Figs. 5B, 6B, 7B, 8 [Fishes v. 8 (no. 4): 206; ref. 40170] Córrego Tamborete, a tributary of Rio Grande at the Furnas dam, upper Rio Paraná basin, Capitólio municipality, Minas Gerais State, Brazil, 20°38'53"S, 46°09'55"W, elevation about 875 meters. Holotype: UFRJ 11845. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus listruroides Costa, Katz & Azevedo-Santos 2023. Current status: Valid as Trichomycterus listruroides Costa, Katz & Azevedo-Santos 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: middle Rio Grande drainage, upper Paraná River basin, Minas Gerais State, Brazil. Habitat: freshwater.

longibarbatus, Trichomycterus Costa [W. J. E. M.] 1992:104, Fig. 4 [Revue française d'Aquariologie Herpétologie v. 18 (no. 4) [for 1991]; ref. 19725] Small stream near Santa Teresa belonging to the upper Rio Piraquê-Açu drainage, lower Rio Doce, Espirito Santo, Brazil. Holotype: MZUSP 43339. Paratypes: MNRJ 629 (1), MZUSP 23812 (17). Type catalog: Ferraris 2007:420 [ref. 29155]. •Synonym of Trichomycterus alternatus (Eigenmann 1917) -- (Reis & de Pinna 2022:15 [ref. 39360]). •Valid as Trichomycterus longibarbatus Costa 1992 -- (Bizerril 1994:623 [ref. 22673], Burgess & Finley 1996:168 [ref. 22901], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Bockmann et al. 2004:227 [ref. 27855], Alencar & Costa 2004:3 [ref. 27991], Ferraris 2007:420 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], Rizzato et al. 2011:485 [ref. 31516], Barbosa & Costa 2011:308 [ref. 31672], Barbosa & Costa 2012:156 [ref. 32045], Bichuette & Rizzato 2012:52 [ref. 32163], Barbosa 2013:274 [ref. 33106], Costa et al. 2022:514 [ref. 39820], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus longibarbatus Costa 1992. Trichomycteridae: Trichomycterinae. Distribution: South America: lower Rio Doce basin, Espirito Santo (Brazil). Habitat: freshwater.

luetkeni, Trichomycterus Katz [A. M.] & Costa [W. J. E. M.] in Costa & Katz 2021:16, Figs. 2E, 2N, 3E-F, 4E, 4O [Systematics and Biodiversity v. 19 (no. 6); ref. 38252] Stream close to road Azevedo, Córrego Água -Limpa subdrainage, Rio Paraopeba drainage, Rio São Francisco basin, Distrito de Pedra Vermelha, Município de Moeda, Estado de Minas Gerais, Brazil, 20°19'21"S, 43°58'03"W, elevation ca. 990 meters. Holotype: UFRJ 12680. Paratypes: CICCAA, MZUSP, UFRJ. •Valid as Trichomycterus luetkeni Katz & Costa 2021 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus luetkeni Katz & Costa 2021. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Paraopeba drainage, Rio São Francisco basin (Minas Gerais, Brazil). Habitat: freshwater.

macareguaensis, Trichomycterus Ardila Rodríguez [C. A.] 2024:11, Figs. 2, 5B, 7B, 9A [Barranquilla, Departamento del Atlántico No. 98; ref. 41346] Cueva Macaregua, Vereda San Francisco, municipio de Curití, Departamento de Santander, Colombia. Holotype: CAR 1029. Paratypes: CAR 399 (10). Appeared once as "macaraguaensis", but appeared many times as macareguaensis in the article. Named after the cave Macaregua, so this spelling is deemed to be correct. •Valid as Trichomycterus macareguaensis Ardila Rodríguez 2024. Current status: Valid as Trichomycterus macareguaensis Ardila Rodríguez 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: La Cueva Macaregua, municipio de Curití, Santander, Colombia. Habitat: freshwater.

macrophthalmus, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2012:80, Fig. 1 [Vertebrate Zoology v. 62 (no. 1); ref. 31901] Small stream, tributary tof Piraí river, between the village of Rio Claro and Lidice, Paraíba do Sul river basin, ca. 22°40'S, 44°02'W, Município de Claro, Rio de Janeiro state, Brazil. Holotype: UFRJ 6003. Paratypes: UFRJ 5675 (3, c&s), 5683 (6). •Valid as Trichomycterus macrophthalmus Barbosa & Costa 2012 -- (Costa et al. 2022:513 [ref. 39820] in subgenus Psammocambeva, Vilardo et al. 2023:5 [ref. 40643] as Trichomycterus macrophtalmus, Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus macrophthalmus Barbosa & Costa 2012. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Paraíba do Sul River basin, Rio de Janeiro state (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

macrotrichopterus, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2010:116, Figs. 9, 19 [Ichthyological Exploration of Freshwaters v. 21 (no. 2); ref. 30782] Córrego do Lava-Pés, near Parque Nacional da Serra da Canastra, ca. 20°13'S, 46°22'W, Município de São Roque de Minas, Río São Francisco Basin, Estado de Minas Gerais, Brazil, elevation 830 meters. Holotype: UFRJ 6031. Paratypes: UFRJ 5775 (3), 5776 (2 c&s). •Valid as Trichomycterus macrotrichopterus Barbosa & Costa 2010 -- (Barbosa & Katz 2016:262 [ref. 34950], Costa et al. 2022:162 [ref. 39290], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus macrotrichopterus Barbosa & Costa 2010. Trichomycteridae: Trichomycterinae. Distribution: South America: São Francisco River basin (Minas Gerais, Brazil). Habitat: freshwater.

maculatus, Trichomycterus Valenciennes [A.] in Cuvier & Valenciennes 1846:493 [Histoire naturelle des poissons v. 18; ref. 1011] Santiago, Chile. Syntypes: MNHN 0000-3166 (10), 0000-4236 (10). Type catalog: Bertin & Estève 1950:64 [ref. 19575], Ferraris 2007:415 [ref. 29155]. •Valid as Trichomycterus maculatus Valenciennes 1846 -- (Burgess 1989:322 [ref. 12860] as maculatum). •Synonym of Trichomycterus areolatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Ferraris 2007:415 [ref. 29155], Mirande & Koerber 2015:37 [ref. 35117]). Current status: Synonym of Trichomycterus areolatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

maculosus, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2010:194, Fig. 1 [Vertebrate Zoology v. 60 (no. 3); ref. 31070] São Francisco Xavier, Cachoeira Pedro David, tributary of river do Peixe, Paraíba do Sul river basin, 22°55'29.5"S, 45°58'49.6"W, Município de São José, São Paulo State, Brazil, elevation about 800 meters. Holotype: UFRJ 6033. Paratypes: UFRJ 677 (6), 5168 (1), 5169 (2), 5693 (2), •Valid as Trichomycterus maculosus Barbosa & Costa 2010 -- (Barbosa & Costa 2011:308 [ref. 31672], Katz & Barbosa 2014:3 [ref. 33418], Costa et al. 2020:81 [ref. 38088], Costa et al. 2022:10 [ref. 39248], Vilardo et al. 2023:5 [ref. 40643], Costa et al. 2024:764 [ref. 41213]). Current status: Valid as Trichomycterus maculosus Barbosa & Costa 2010. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Paraíba do Sul basin (São Paulo State, Brazil). Habitat: freshwater.

maldonadoi, Trichomycterus Ardila Rodríguez [C. A.] 2011:14, Figs. 1-8 [Dahlia (Revista de la Asociación Colombiana de Ictiólogos, ACICTIOS). v. 11; ref. 31410] Afluente de la quebrada Tuis Tuis, cuenca alta del río Sinú, municipio de Tierralta, Departamento de Córdoba, Colombia, elevation 90 meters. Holotype: CAR 500. Paratypes: CAR 380 (1), 394 (1), 458 (4), 467 (18); IAvH-P 11533 (5) [ex CAR 380]; ICNMHN 17623 (5). Type catalog: DoNascimiento et al. 2016:417 [ref. 34787]. •Valid as Trichomycterus maldonadoi Ardila Rodríguez 2011 -- (Ardila Rodríguez 2014:10 [ref. 33769], Ardila Rodríguez 2016:12 [ref. 34399], Ardila Rodríguez 2016:15 [ref. 35108], Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926]). Current status: Valid as Trichomycterus maldonadoi Ardila Rodríguez 2011. Trichomycteridae: Trichomycterinae. Distribution: Upper Sinú River basin, Córdoba, Colombia. Habitat: freshwater.

manaurensis, Trichomycterus Ardila Rodríguez [C. A.] 2016:8, Figs. 2, 5B [No. 2; ref. 35108] Río Manaure, parte baja, Serranía del Perijá, Cuenca del río Magdalena, municipio de Manaure, Departamento del Cesar, Colombia. Holotype: CAR 683. Paratypes: CAR, IAvH-P. •Valid as Trichomycterus manaurensis Ardila Rodríguez 2016 -- (Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:11 [ref. 35926], DoNascimiento & Prada-Pedreros 2020:12 [ref. 37386]). Current status: Valid as Trichomycterus manaurensis Ardila Rodríguez 2016. Trichomycteridae: Trichomycterinae. Distribution: Río Magdalena basin, Colombia. Habitat: freshwater.

maracaiboensis, Pygidium banneaui Schultz [L. P.] 1944:262, Pl. 6 (fig. B) [Proceedings of the United States National Museum v. 94 (no. 3172); ref. 3959] Río San Juan near bridge, south of Mene Grande, tributary to Río Motatán, Maracaibo basin, Venezuela. Holotype: USNM 121227. Paratypes: MCZ 37240 [ex USNM 121229] (3); UMMZ 142484 [ex USNM 121229] (1); USNM 121228 (5), 121229 (16, now 12, 3 to MCZ, 1 to UMMZ), 121230 (1, missing), 121231 (2). Type catalog: Ferraris & Vari 1992:41 [ref. 19771], Ferraris 2007:420 [ref. 29155]. •Synonym of Trichomycterus banneaui (Eigenmann 1912), but a valid subspecies as described -- (Burgess 1989:321 [ref. 12860]). •Valid as Trichomycterus maracaiboensis (Schultz 1944) -- (de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Ferraris 2007:420 [ref. 29155], Ardila Rodríguez 2007:[9] [ref. 29569], Ardila Rodríguez 2011:[7] [ref. 32732], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:10 [ref. 34399], Ardila Rodríguez 2016:16 [ref. 35108], Ardila Rodríguez 2017:9 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:11 [ref. 35926]). Current status: Valid as Trichomycterus maracaiboensis (Schultz 1944). Trichomycteridae: Trichomycterinae. Distribution: San Juan River, tributary to Motatán River, Lake Maracaibo basin, Venezuela and río Zulia, Colombia. Habitat: freshwater.

maracaya, Trichomycterus Bockmann [F. A.] & Sazima [I.] 2004:63, Figs. 1-8 [Neotropical Ichthyology v. 2 (no. 2); ref. 27865] Unnamed streamlet at the foothill of the Morro de Ferro, about 21°46'45"S, 46°31'50"W [reverse in original description], rio Pardo basin, Poços de Caldas, Minas Gerais State, Brazil. Holotype: ZUEC 6137. Paratypes: LIRP 4381 (4, 1 c&s); MCP 34575 (2); MNRJ 25872 (2); MZUSP 83357 (2); ZUEC 4115 (1), 6136 (3), 6138 (3, 1 c&s). Not treated by Ferraris 2007 [ref. 29155]. •Valid as Trichomycterus maracaya Bockmann & Sazima 2004 -- (Bockmann et al. 2004:227 [ref. 27855], Barbosa & Costa 2011:308 [ref. 31672], Barbosa & Azevedo-Santos 2012:360 [ref. 32318], García-Melo et al. 2016:237 [ref. 34471], Barbosa & Katz 2016:262 [ref. 34950]). Current status: Valid as Trichomycterus maracaya Bockmann & Sazima 2004. Trichomycteridae: Trichomycterinae. Distribution: South America: Pardo River drainage, upper Paraná River, southeastern Brazil. Habitat: freshwater.

mariamole, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2010:110, Figs. 6, 16 [Ichthyological Exploration of Freshwaters v. 21 (no. 2); ref. 30782] Small stream tributary of Rio Alambari, Rio Paraíba do Sul basin, 22°23'43"S, 44°31'47"W, Município de Resende, Estado de Rio do Rio Janeiro, Brazil, elevation 663 meters. Holotype: UFRJ 6026. Paratypes: UFRJ 5142 (15), 5247 (15), 5400 (3 c&s), 5401 (3 c&s), 5666 (17), 5688 (6). •Valid as Trichomycterus mariamole Barbosa & Costa 2010 -- (Barbosa & Katz 2016:262 [ref. 34950], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus mariamole Barbosa & Costa 2010. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Paraíba do Sul basin (southeastern Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

marmoratus, Trichomycterus Philippi [R. A.] 1866:714 [Monatsberichte der Königlichen Preussischen Akademie der Wissenschaften zu Berlin 1866 (for 15 Nov. 1866); ref. 14056] Chile. No types known. Type catalog: Ferraris 2007:415 [ref. 29155]. •Synonym of Trichomycterus areolatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Ferraris 2007:415 [ref. 29155], Mirande & Koerber 2015:37 [ref. 35117]). Current status: Synonym of Trichomycterus areolatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

megantoni, Trichomycterus Fernández [L.] & Quispe Chuquihuamaní [R.] 2007:50, Figs. 1-3 [Zootaxa 1545; ref. 29320] Santuario Nacional Machiguenga Megantoni, Quebrada Earoto, Urubamba River, Ucayali River basin, Peru, elevation 2100 meters. Holotype: MUSM 29631. Paratypes: MUSM 31555 (4), 25464 (2), 25465 (5, 1 c&s), 25466 (3), 25467 (5, 1 c&s). •Valid as Trichomycterus megantoni Fernández & Quispe Chuquihuamaní 2007 -- (Sarmiento et al. 2014:193 [ref. 35004], García-Melo et al. 2016:237 [ref. 34471], Miranda & Fernández 2020:463 [ref. 37703], Chuctaya et al. 2022:49 [ref. 42137]). Current status: Valid as Trichomycterus megantoni Fernández & Quispe Chuquihuamaní 2007. Trichomycteridae: Trichomycterinae. Distribution: South America: Ucayali River basin (Peru and Bolivia). Habitat: freshwater.

melanopygius, Trichomycterus Reis [V. J. C.], Santos [S. A. dos], Britto [M. R.], Volpi [T. de A.] & de Pinna [M. C. C.] 2020:4, Figs. 1, 2f, 3, 4a, 5a, 6, 7a [Journal of Fish Biology v. 97 (no. 6); ref. 37862] Córrego dos Borges stream flowing into left bank of Risoleta Neves reservoir, Rio Doce basin, Rio Doce municipality, Minas Gerais State, Brazil, 20°12'21.63"S, 42°52'56.24"W. Holotype: MZUSP 123762. Paratypes: MNRJ, MZUSP. Plus additional non-type material. •Valid as Trichomycterus melanopygius Reis, Santos, Britto, Volpi & de Pinna 2020 -- (Costa & Katz 2022:19 [ref. 38971], Reis & de Pinna 2022:69 [ref. 39360], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus melanopygius Reis, Santos, Britto, Volpi & de Pinna 2020. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Doce basin, Minas Gerais (Brazil). Habitat: freshwater.

meridae, Trichomycterus Regan [C. T.] 1903:624 [Annals and Magazine of Natural History (Series 7) v. 12 (no. 72) (art. 64); ref. 13401] Merida, and Río Albriegas above Merida, elevation 3500 meters, Venezuela. Syntypes: BMNH 1903.4.28.35-38 (4), 1903.6.30.77-79 (now 3); USNM 133136 [ex BMNH 1903.6.30.77-79] (1). Type catalog: Ferraris & Vari 1992:43 [ref. 19771], Ferraris 2007:420 [ref. 29155]. •Valid as Trichomycterus meridae Regan 1903 -- (Burgess 1989:322 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Ferraris 2007:420 [ref. 29155], Ardila Rodríguez 2007:[9] [ref. 29569], Ardila Rodríguez 2011:[7] [ref. 32732], Ardila Rodríguez 2014:12 [ref. 33769], Ardila Rodríguez 2016:11 [ref. 34399], García-Melo et al. 2016:237 [ref. 34471], Ardila Rodríguez 2016:17 [ref. 35108], Ardila Rodríguez 2017:10 [ref. 35579], Ardila Rodríguez 2018:11 [ref. 35926]). Current status: Valid as Trichomycterus meridae Regan 1903. Trichomycteridae: Trichomycterinae. Distribution: Albriegas River drainage, Lake Maracaibo basin, Venezuela. Habitat: freshwater.

migrans, Pygidium Dahl [G.] 1960:309, Fig. 3 [Novedades Colombianas v. 1 (no. 5); ref. 5836] Río Guayabero, Orinoco System, Colombia. Holotype: ICNMHN 399. Paratypes: (possibly more than a thousand) ICNMHN 400 (683, not 1384). Type catalog: Cala 1981:4-5 [ref. 23525], Ferraris 2007:420 [ref. 29155], Mojica & Agudelo-Zamora 2018:36 [ref. 36127]. •Valid as Trichomycterus migrans (Dahl 1960) -- (de Pinna 1998:297 [ref. 23847], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Ferraris 2007:420 [ref. 29155], DoNascimiento et al. 2017:70 [ref. 35633], Urbano-Bonilla et al. 2018:77 [ref. 35773]). Current status: Valid as Trichomycterus migrans (Dahl 1960). Trichomycteridae: Trichomycterinae. Distribution: Guayabero River, Orinoco River basin, Colombia. Habitat: freshwater.

mimonha, Trichomycterus Costa [W. J. E. M.] 1992:106, Fig. 7 [Revue française d'Aquariologie Herpétologie v. 18 (no. 4) [for 1991]; ref. 19725] Rio Benfica, Rio Paraiba basin, 2 kilometers north of Piquete, São Paulo, Brazil. Holotype: MZUSP 43343. Paratypes: MNRJ 641 (7), MZUSP 43344 (7). Type catalog: Ferraris 2007:420 [ref. 29155]. •Valid as Trichomycterus mimonha Costa 1992 -- (Bizerril 1994:623 [ref. 22673], Burgess & Finley 1996:168 [ref. 22901], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Barbosa & Costa 2003:282 [ref. 27395], Barbosa & Costa 2003:179 [ref. 27636], Wosiacki & Garavello 2004:3 [ref. 27649], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:420 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], García-Melo et al. 2016:238 [ref. 34471], Barbosa & Katz 2016:262 [ref. 34950], Costa et al. 2022:162 [ref. 39290], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus mimonha Costa 1992. Trichomycteridae: Trichomycterinae. Distribution: South America: Benefica River drainage, Paraíba do Sul River basin (São Paulo, Brazil). Habitat: freshwater.

mimosensis, Trichomycterus Barbosa [M. A.] 2013:270, Figs. 1-2 [Vertebrate Zoology v. 63 (no. 3); ref. 33106] Estado do Espírito, Santo: Município de Mimoso do Sul,: rio Alto Pratinha, tributary of rio Muqui do Sul, tributary of the rio Itabapoana basin, 21°03'85"S, 41°18'22"W [probably 21°02'20.6"S, 41°18'43"W], Brazil, elevation 660 meters, Holotype: UFRJ 8156. Paratypes: UFRJ 7545 (11), 7792 (5, c&s). •Valid as Trichomycterus mimosensis Barbosa 2013 -- (García-Melo et al. 2016:237 [ref. 34471], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:51 [ref. 41258], Costa et al. 2024:134 [ref. 41685]). Current status: Valid as Trichomycterus mimosensis Barbosa 2013. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Itabapoana basin, Espírito Santo (Brazil). Habitat: freshwater.

minus, Trichomycterus Fernández [L.] & Vari [R. P.] 2012:632, Fig. 1 [Copeia 2012 (no. 4); ref. 32359] Río Cuevas, 27°04'S, 66°39'W, Departamento Belén, Provincia de Catamarca, Argentina, elevation 2318 meters. Holotype: MCN 1528. Paratypes: MCN 1529 (8), USNM 405319 (1). •Valid as Trichomycterus minus Fernández & Vari 2012 -- (Koerber 2014:8 [ref. 33621], Mirande & Koerber 2015:38 [ref. 35117], García-Melo et al. 2016:237 [ref. 34471]). Current status: Valid as Trichomycterus minus Fernández & Vari 2012. Trichomycteridae: Trichomycterinae. Distribution: Río Cuevas, Argentina. Habitat: freshwater.

mirissumba, Trichomycterus Costa [W. J. E. M.] 1992:107, Fig. 8 [Revue française d'Aquariologie Herpétologie v. 18 (no. 4) [for 1991]; ref. 19725] Rio Preto, near junction with the Santa Clara Creek, Rio Paraiba basin, Visconde de Mauá, Rio de Janeiro, Brazil. Holotype: MZUSP 43345. Paratypes: MNRJ 546 (2), 601 (1), 642 (3); MZUSP 43346 (3). Type catalog: Ferraris 2007:420 [ref. 29155]. •Valid as Trichomycterus mirissumba Costa 1992 -- (Bizerril 1994:623 [ref. 22673], Burgess & Finley 1996:168 [ref. 22901], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Barbosa & Costa 2003:282 [ref. 27395], Barbosa & Costa 2003:179 [ref. 27636], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:420 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], García-Melo et al. 2016:238 [ref. 34471], Barbosa & Katz 2016:262 [ref. 34950], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus mirissumba Costa 1992. Trichomycteridae: Trichomycterinae. Distribution: South America: Preto River, Paraíba do Sul River basin, Rio de Janeiro state (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

mogotensis, Trichomycterus Ardila Rodríguez [C. A.] 2017:8, Figs. 3, 5B, 6B, 7B, 9 [Barranquilla, Departamento del Atlántico No. 10; ref. 35812] Quebrada La Tachuela, afluente del río Mogotes, cuenca del río Fonce, Departamento de Santander, Colombia. Holotype: CAR 790. Paratypes: CAR, FMNH, IAvH-P, IUM. •Valid as Trichomycterus mogotensis Ardila Rodríguez 2017 -- (Ardila Rodríguez 2018:10 [ref. 35926], DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386], Ardila Rodríguez 2023:7 [ref. 40609]). Current status: Valid as Trichomycterus mogotensis Ardila Rodríguez 2017. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Chicamocha drainage, Magdalena basin, Colombia. Habitat: freshwater.

mondolfi, Pygidium Schultz [L. P.] 1945:29, Fig. 1 [Journal of the Washington Academy of Sciences v. 35 (no. 1); ref. 13152] Quebrado Chacaito near Caracas, Estado de Mirando, Río Tuy system, Venezuela. Holotype: USNM 120377. Paratypes: USNM 120378 (2). Type catalog: Ferraris & Vari 1992:42 [ref. 19771], Ferraris 2007:421 [ref. 29155]. •Valid as Trichomycterus mondolfi (Schultz 1945) -- (Burgess 1989:322 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Ferraris 2007:421 [ref. 29155], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:11 [ref. 34399], Ardila Rodríguez 2016:16 [ref. 35108], Ardila Rodríguez 2017:10 [ref. 35579], Ardila Rodríguez 2018:11 [ref. 35926]). Current status: Valid as Trichomycterus mondolfi (Schultz 1945). Trichomycteridae: Trichomycterinae. Distribution: Tuy River basin, Caribbean drainage, Venezuela. Habitat: freshwater.

montesi, Trichomycterus Ardila Rodríguez [C. A.] 2016:5, Figs. 1, 5A, 6A, 7 [No. 2; ref. 35108] Quebrada del Cinco, afluente del río Manaure, parte alta, Serranía del Perijá, Cuenca del río Magdalena, municipio de Manaure, Departamento del Cesar - Colombia, elevation 1434 meters. Holotype: CAR 681. Paratypes: CAR, IAvH-P, ICNMHN. •Valid as Trichomycterus montesi Ardila Rodríguez 2016 -- (Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926], DoNascimiento & Prada-Pedreros 2020:11 [ref. 37386]). Current status: Valid as Trichomycterus montesi Ardila Rodríguez 2016. Trichomycteridae: Trichomycterinae. Distribution: Río Magdalena basin, Colombia. Habitat: freshwater.

motatanensis, Pygidium emanueli Schultz [L. P.] 1944:260, Pl. 6 (fig. A) [Proceedings of the United States National Museum v. 94 (no. 3172); ref. 3959] Río San Juan at the bridge south of Mene Grande, Motatán system, Maracaibo basin, Venezuela. Holotype: USNM 121232. Paratypes: MCZ 37282 [ex USNM 121233] (1), USNM 121233 (5, now 4). Type catalog: Ferraris & Vari 1992:42 [ref. 19771], Ferraris 2007:421 [ref. 29155]. •Synonym of Trichomycterus emanueli (Schultz 1944), but a valid subspecies as described -- (Burgess 1989:322 [ref. 12860]). •Valid as Trichomycterus motatanensis (Schultz 1944) -- (de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Ferraris 2007:421 [ref. 29155], Ardila Rodríguez 2007:[9] [ref. 29569], Ardila Rodríguez 2011:[7] [ref. 32732], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:11 [ref. 34399], García-Melo et al. 2016:237 [ref. 34471], Ardila Rodríguez 2016:17 [ref. 35108], Ardila Rodríguez 2017:10 [ref. 35579], Ardila Rodríguez 2018:11 [ref. 35926]). Current status: Valid as Trichomycterus motatanensis (Schultz 1944). Trichomycteridae: Trichomycterinae. Distribution: Lake Maracaibo basin, Venezuela. Habitat: freshwater.

mutabilicolor, Trichomycterus Costa [W. J. E. M.] in Costa, Mattos, Lopes, Amorim & Katz 2022:5, Figs. 2, 3C-D, 4 [Zoological Studies v. 61: 11; ref. 39248] Cachoeira Mato Limpo, Riacho Pedacinho do Céu, Rio Taboão drainage, upper Rio Paraitinga drainage, Rio Paraíba do Sul basin, Município de Cunha, São Paulo State, Brazil, 23°09'25"S, 44°51'21"W, elevation about 1335 meters. Holotype: UFRJ 12650. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus mutabilicolor Costa 2022 -- (Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus mutabilicolor Costa 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Paraitinga drainage, Rio Paraíba do Sul basin (São Paulo State, Brazil). Habitat: freshwater.

nabusimakensis, Trichomycterus Ardila Rodríguez [C. A.] 2018:11, Fig. 3 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Vereda Nabusímake, Pueblo Bello municipality, Sierra Nevada de Santa Marta, Departamento del Cesar, Colombia, elevation 1800 meters. Holotype: CAR 792. Paratypes: CAR, MHNLS. Type locality amended by DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386]. •Valid as Trichomycterus nabusimakensis Ardila Rodríguez 2018 -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386]). Current status: Valid as Trichomycterus nabusimakensis Ardila Rodríguez 2018. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Río Fundación basin, Departamento del Cesar, Colombia. Habitat: freshwater.

nietoi, Trichomycterus Ardila Rodríguez [C. A.] 2014:2, 1-2, 4-7 [ ref. 33769] Quebrada Kemakumake, tributary of río Guachaca, Sierra Nevada de Santa Marta, Departamento del Magdalena, Colombia. Holotype: CAR 650. Paratypes: CAR, IAvHP, MBUCV-V, MCNG, MHNLS. Type catalog: DoNascimiento et al. 2016:418 [ref. 34787]. •Valid as Trichomycterus nietoi Ardila Rodríguez 2014 -- (Ardila Rodríguez 2016:11 [ref. 34399], García-Melo et al. 2016:237 [ref. 34471], Ardila Rodríguez 2016:15 [ref. 35108], Ardila Rodríguez 2017:10 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926]). Current status: Valid as Trichomycterus nietoi Ardila Rodríguez 2014. Trichomycteridae: Trichomycterinae. Distribution: Río Guachaca drainage, Sierra Nevada de Santa Marta, Colombia. Habitat: freshwater.

nigricans, Trichomycterus Valenciennes [A.] 1832:348 [Voyage de Humboldt et Bonpland v. 2 (Title page 1833); ref. 4503] Rio de Janeiro, Brazil. Holotype: ? MNHN B-0251. Type catalog: Ferraris 2007:421 [ref. 29155]. Unneeded replacement for Eremophilus mulisii Humboldt 1805; in prevailing usage as a different genus and species. Genus misspelled Thrychomycterus in Cuvier & Valenciennes 1846:485 (but spelled correctly on p. 494 [ref. 1011]). •Valid as Trichomycterus nigricans Valenciennes 1832 -- (Burgess 1989:322 [ref. 12860], Bizerril 1994:623 [ref. 22673], Arratia 1998:349 [ref. 23661], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Bockmann et al. 2004:227 [ref. 27855], Maldonado-Ocampo & Albert 2004:5 [ref. 27978], Lima & Costa 2004:3 [ref. 27979], Ferraris 2007:421 [ref. 29155], García-Melo et al. 2016:237 [ref. 34471], Costa et al. 2020:2911 [ref. 37529], dos Reis et al. 2020:7 [ref. 37862], Costa et al. 2020:81 [ref. 38088], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662], Costa et al. 2025:182 [ref. 42356]). Current status: Valid as Trichomycterus nigricans Valenciennes 1832. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Macacu basin, Rio de Janeiro State (Brazil). IUCN (2021): Data Deficient. Habitat: freshwater.

nigroauratus, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2008:175, Figs. 1-2, 7A, 8A [aqua, International Journal of Ichthyology v. 14 (no. 4); ref. 29961] Cachoeira da Usina, rio do Barreiro, tributary of rio Paraíba do Sul basin, 22°40'29.5"S, 44°34'49.6"W, Município de São José do Barreiro, Estado de São Paulo, Brazil, elevation 600 meters. Holotype: UFRJ 6034. Paratypes: many at UFRJ. •Valid as Trichomycterus nigroauratus Barbosa & Costa 2008 -- (Barbosa & Costa 2010:121 [ref. 30782], Barbosa & Costa 2010:194 [ref. 31070], Barbosa & Costa 2011:308 [ref. 31672], Datovo et al. 2012:35 [ref. 31994], Katz & Barbosa 2014:3 [ref. 33418], Costa et al. 2020:81 [ref. 38088], Costa et al. 2022:10 [ref. 39248], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus nigroauratus Barbosa & Costa 2008. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Paraíba do Sul basin, São Paulostate (Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

nigromaculatus, Trichomycterus Boulenger [G. A.] 1887:349 [Annals and Magazine of Natural History (Series 5) v. 19 (no. 113); ref. 17018] Colombia. Syntypes: BMNH 1880.2.26.16-17 (2). Type catalog: Ferraris 2007:421 [ref. 29155]. •Valid as Trichomycterus nigromaculatus Boulenger 1887 -- (Burgess 1989:322 [ref. 12860] as nigromaculatum, de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Ferraris 2007:421 [ref. 29155], Castellanos-Morales 2008:312 [ref. 29836], Ardila Rodríguez 2011:10 [ref. 31409], Ardila Rodríguez 2014:10 [ref. 33769], Ardila Rodríguez 2016:11 [ref. 34399], Ardila Rodríguez 2016:15 [ref. 35108], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926]). Current status: Valid as Trichomycterus nigromaculatus Boulenger 1887. Trichomycteridae: Trichomycterinae. Distribution: Departamento del Magdalena, Andes of Colombia. Habitat: freshwater.

novalimensis, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2010:112, Figs. 7, 17 [Ichthyological Exploration of Freshwaters v. 21 (no. 2); ref. 30782] Small stream tributary of Córrego de Mutuca, to right side of road Belo Horizonte-Nova Lima, kilometer 20, Rio São Francisco basin, Município de Nova Lima, Estado de Minas Gerais, Brazil, elevation 890 meters. Holotype: MZUSP 104536. Paratypes: MZUSP 37145 (15). •Valid as Trichomycterus novalimensis Barbosa & Costa 2010 -- (Barbosa & Katz 2016:262 [ref. 34950], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus novalimensis Barbosa & Costa 2010. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio São Francisco basin (Minas Gerais, Brazil). Habitat: freshwater.

ocanaensis, Trichomycterus Ardila Rodríguez [C. A.] 2011:1, Figs. 1, 3-6; unnumbered Pls. 1-2 [Peces del Departamento de Santander - Colombia No. 1; ref. 32732] Rio Teja, afluente del rio Algodonal, cuenca alto del río Catatumbo, municipio de Ocaña. 8°14'15"N, 73°02'26"E, Departamento de Norte de Santander, Colombia, elevation 1202 meters. Holotype: CAS 390. Paratypes: MBUCV-V-35378 (5) [ex CAR 386]; CAR 17 (2), 381 (55), 382 (7), 383 (13), 384 (11), 385 (7), 386 (77); IAvH-P 11115 (5); ICNMNH 16919 [ex CAR 386] (7). Type catalog: DoNascimiento et al. 2016:418 [ref. 34787], Mojica & Agudelo-Zamora 2018:39 [ref. 36127]. •Valid as Trichomycterus ocanaensis Ardila Rodríguez 2011 -- (Ardila Rodríguez 2014:10 [ref. 33769], Ardila Rodríguez 2016:11 [ref. 34399], Ardila Rodríguez 2016:15 [ref. 35108], Ardila Rodríguez 2017:10 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926], DoNascimiento & Prada-Pedreros 2020:12 [ref. 37386]). Current status: Valid as Trichomycterus ocanaensis Ardila Rodríguez 2011. Trichomycteridae: Trichomycterinae. Distribution: Santander, Colombia. Habitat: freshwater.

oroyae, Pygidium Eigenmann [C. H.] & Eigenmann [R. S.] 1889:51 [Proceedings of the California Academy of Sciences (Series 2) v. 2; ref. 1253] Rio Oroya, Pochachara, Brazil. Syntypes: MCZ 3955 (8). Type catalog: Ferraris 2007:423 [ref. 29155]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155]). •Valid as Trichomycterus oroyae (Eigenmann & Eigenmann 1889) -- (Ortega & Vari 1986:15 [ref. 9708], Fernández & Chuquihuamaní 2007:55 [ref. 29320], García-Melo et al. 2016:237 [ref. 34471], Chuctaya et al. 2022:49 [ref. 42137]). Current status: Valid as Trichomycterus oroyae (Eigenmann & Eigenmann 1889). Trichomycteridae: Trichomycterinae. Distribution: South America: Brazil, Peru. Habitat: freshwater.

pallens, Trichomycterus Philippi [R. A.] 1866:715 [Monatsberichte der Königlichen Preussischen Akademie der Wissenschaften zu Berlin 1866 (for 15 Nov. 1866); ref. 14056] Chile. No types known. Type catalog: Ferraris 2007:415 [ref. 29155]. •Synonym of Trichomycterus areolatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Ferraris 2007:415 [ref. 29155] as palleus, Mirande & Koerber 2015:37 [ref. 35117]). Current status: Synonym of Trichomycterus areolatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

pantherinus, Trichomycterus Alencar [A. R.] & Costa [W. J. E. M.] 2004:2, Fig. 1 [Zootaxa No. 744; ref. 27991] Below waterfall near Fazenda Sete Quedas, Rio da Prata, Rio Santa Maria da Victória basin, 20°03'15.9"S, 40°32'20.5'W, Município Santa Leopoldina, Estado de Espírito Santo, Brazil, elevation 377 meters. Holotype: UFRJ 6001. Paratypes: MCP 35209 (6); UFRJ 5659 (22), 5660 (6, c&s). Type catalog: Ferraris 2007:421 [ref. 29155]. •Valid as Trichomycterus pantherinus Alencar & Costa 2004 -- (Ferraris 2007:421 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], Barbosa & Costa 2012:156 [ref. 32045], Barbosa 2013:274 [ref. 33106], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus pantherinus Alencar & Costa 2004. Trichomycteridae: Trichomycterinae. Distribution: South America: Da Prata River, Santa Maria da Vitória River basin, Espírito Santo (Brazil). Habitat: freshwater.

paolence, Pygidium Eigenmann [C. H.] 1917:698 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Rio Tietê at Alto da Serra, São Paulo State, Brazil. Holotype: FMNH 58085 [ex CM 7081]. Paratype: FMNH 58575 [ex CM 7597] (1). Additional material: FMNH 58119 [ex CM 7117] (10). Type catalog: Henn 1928:80 [ref. 12305], Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:421 [ref. 29155]. •Valid as Cambeva paolence (Eigenmann 1917) -- (Katz et al. 2018:563 [ref. 36330], dos Reis et al. 2020:471 [ref. 38364], Martins et al. 2024:23 [ref. 41475]). •Valid as Trichomycterus paolence (Eigenmann 1917) -- (Burgess 1989:322 [ref. 12860], Trajano & de Pinna 1996:89 [ref. 22915], Fernández & Bichuette 2002:278 [ref. 26539], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:421 [ref. 29155] dated 1918, Barbosa & Azevedo-Santos 2012:360 [ref. 32318], Fernández et al. 2015:11 [ref. 35041], Reis et al. 2025:649 [ref. 42572]). Current status: Valid as Trichomycterus paolence (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: South America: Ribeira de Iguape basin and upper Paraná River basin (São Paulo State, Brazil). Habitat: freshwater.

paquequerense, Pygidium Miranda Ribeiro [P. de] 1943:2, Fig. [Boletim do Museu Nacional do Rio de Janeiro, Zoologia, Nova Série No. 9; ref. 10390] Rio Paquequer Grande, Estado do Rio de Janeiro, Brazil. Holotype (unique): MNRJ 1159. Type information: Miranda Ribeiro 1954:11 [ref. 21988]. Type catalog: Ferraris 2007:421 [ref. 29155]. Genus Trichomycterus is masculine, therefore correction to paquequerensis. •Synonym of Trichomycterus immaculatus (Eigenmann & Eigenmann 1889) -- (Costa et al. 2020:2923 [ref. 37529]). •Valid as Trichomycterus paquequerensis (Miranda Ribeiro 1943) (often spelled paquequerense) -- (Burgess 1989:322 [ref. 12860], Bizerril 1994:623 [ref. 22673], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:421 [ref. 29155], Barbosa & Costa 2011:308 [ref. 31672], García-Melo et al. 2016:238 [ref. 34471] as paquequerense, Reis & de Pinna 2022:61 [ref. 39360], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus paquequerensis (Miranda Ribeiro 1943). Trichomycteridae: Trichomycterinae. Distribution: South America: Paraíba do Sul River basin, Rio de Janeiro state (southeastern Brazil). IUCN (2022). Endangered, as Trichomycterus paquequerense. Habitat: freshwater.

pardus, Trichomycterus Cope [E. D.] 1874:132 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 26; ref. 931] Peru [Jequetepeque]. Holotype (?): ANSP 22004. Type catalog: Böhlke 1984:163 [ref. 13621], Ferraris 2007:423 [ref. 29155]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155], DoNascimiento et al. 2014:726 [ref. 33632]). Current status: Synonym of Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

pauciradiatus, Trichomycterus Alencar [A. R.] & Costa [W. J. E. M.] 2006:44, Fig. 1 [Zootaxa No. 1269; ref. 28959] Córrego Debaixo, stream tributary of córrego Aguna Limpa, rio Paraná basin, 21°26'40"S, 44°36'09"W, Municíipio de Carrancas, Estado de Minas Gerais, Brazil. Holotype: UFRJ 5831. Paratypes: MCP 38978 (6); UFRJ 5807 (22), 5807 (22), 5808 (6, c&s), 5830 (1), •Valid as Trichomycterus pauciradiatus Alencar & Costa 2006 -- (Ferraris 2007:440 [ref. 29155], Datovo et al. 2012:36 [ref. 31994], Barbosa & Azevedo-Santos 2012:360 [ref. 32318], Costa & Katz 2021:18 [ref. 38252], Vilardo et al. 2023:5 [ref. 40643], Silva-Sene et al. 2024:4 [ref. 41784]). Current status: Valid as Trichomycterus pauciradiatus Alencar & Costa 2006. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Grande drainage, Paraná River basin (southeastern Brazil). Habitat: freshwater.

pentlandi, Trichomycterus Castelnau [F. L.] 1855:49, Pl. 24 (fig. 1) [Animaux nouveaux or rares v. 2; ref. 766] Lake near Mission Sarayacu which connects to Río Ucayali, Peru. Holotype (unique): MNHN B-0608. Type catalog: Bertin & Estève 1950:62 [ref. 19575], Ferraris 2007:423 [ref. 29155]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155]). Current status: Synonym of Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

pictus, Trichomycterus Castelnau [F. L.] 1855:50, Pl. 24 (fig. 2) [Animaux nouveaux or rares v. 2; ref. 766] Lake Titicaca, Bolivia. Syntypes: MNHN B-0609 (3). Type catalog: Bertin & Estève 1950:62 [ref. 19575], Ferraris 2007:423 [ref. 29155]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155]). Current status: Synonym of Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

pirabitira, Trichomycterus Barbosa [M. A.] & Azevedo-Santos [V. M.] 2012:358, Fig. 1-2 [Vertebrate Zoology v. 62 (no. 3); ref. 32318] Small stream between Carmo do rio Claro and Conceição da Aparecida, tributary of rio Grande, rio Paraná basin, ca. 21°8′53′′S, 46°14′95′′W, Estado de Minas Gerais: Município de Conceição da Aparecida, Brazil, elevation ca. 960 meters. Holotype: UFRJ 8335. Paratypes: many at UFRJ. •Valid as Trichomycterus pirabitira Barbosa & Azevedo-Santos 2012 -- (Barbosa & Katz 2016:262 [ref. 34950], Costa et al. 2023:15 [ref. 40170], Vilardo et al. 2023:5 [ref. 40643], Silva-Sene et al. 2024:4 [ref. 41784] as cf. pirapitira). Current status: Valid as Trichomycterus pirabitira Barbosa & Azevedo-Santos 2012. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Grande drainage, upper Rio Paraná basin, Minas Gerais State (Brazil). Habitat: freshwater.

piratymbara, Trichomycterus Katz [A. M.], Barbosa [M. A.] & Costa [W. J. E. M.] 2013:362, Fig. 2 [Ichthyological Exploration of Freshwaters v. 23 (no. 4) (for 2012); ref. 32530] João Pinheiro stream, on road to Cristais, 20°53'15"S, 45°33'45"W, Estado de Minas Gerais, Brazil, altitude 795 meters. Holotype: UFRJ 8602. Paratypes: UFRJ 7276 (29) 8595 (5 c&s). •Valid as Trichomycterus piratymbara Katz, Barbosa & Costa 2013 -- (Costa & Katz 2021:18 [ref. 38252], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus piratymbara Katz, Barbosa & Costa 2013. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Grande drainage, Paraná river basin (Minas Gerais, Brazil). Habitat: freshwater.

piurae, Pygidium punctulatum Eigenmann [C. H.] 1922:63 [Memoirs of the Carnegie Museum v. 9 (no. 1); ref. 1243] Piura, Peru. Holotype: CAS 58119 [ex IU 15224]. Paratypes: (22) CAS 58120 (14), FMNH 58672 (3), 77904 (5). Additional original material: CAS 64589 [ex IU 15061] (14), 64590 [ex IU 15225] (1); ?CAS [ex CM 7675; IU 15223] (4), FMNH 58646-47 (2, 1) Type catalog: Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:421 [ref. 29155]. •Synonym of Trichomycterus punctulatus Valenciennes 1846, but a valid subspecies as described -- (Burgess 1989:323 [ref. 12860]). •Valid as Trichomycterus piurae (Eigenmann 1922) -- (de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Ferraris 2007:421 [ref. 29155], García-Melo et al. 2016:237 [ref. 34471], Reis et al. 2016:17 [ref. 34496], Meza-Vargas et al. 2022:4 [ref. 39566], Valenzuela et al. 2023:95 [ref. 40815]). Current status: Valid as Trichomycterus piurae (Eigenmann 1922). Trichomycteridae: Trichomycterinae. Distribution: South America: Piura River basin, Pacific slope (Peru). Habitat: freshwater.

poeyanus, Trichomycterus Cope [E. D.] 1877:47 [31] [Proceedings of the American Philosophical Society v. 17; ref. 18033] Peru. Syntypes: ANSP 21382-83 (2) Arequipa. Type catalog: Böhlke 1984:163 [ref. 13621], Ferraris 2007:423 [ref. 29155]. On p. 31 of separate. Based on Trichomycterus rivulatus of Cope 1874:132 [ref. 931]. •Valid as Trichomycterus poeyanus Cope 1877 -- (Ortega & Vari 1986:15 [ref. 9708], Burgess 1989:322 [ref. 12860] as poeyanum). •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155]). Current status: Synonym of Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

potschi, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2003:282, Figs. 1-5 [Ichthyological Exploration of Freshwaters v. 14 (no. 3); ref. 27395] Rio das Cachoeiras, serra do Matutu, Município de Mangaratiba, Estado do Rio de Janeiro, Brazil. Holotype: MCP 29061. Paratypes: MCP 29062 (2), UFRJ 3247 (4, 1 c&s), 4727 (11), 4728 (5, c&s). Plus non-types. Type catalog: Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus potschi Barbosa & Costa 2003 -- (Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:421-422 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], Barbosa & Katz 2016:262 [ref. 34950], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus potschi Barbosa & Costa 2003. Trichomycteridae: Trichomycterinae. Distribution: South America: coastal basins between Mangaratiba and Itaguaí, Rio de Janeiro state (Brazil). IUCN (2021): Data Deficient. Habitat: freshwater.

pradensis, Trichomycterus Sarmento-Soares [L. M.], Martins-Pinheiro [R. F.], Aranda [A. T.] & Chamon [C. C.] 2005:291, Figs. 1- 6 [Ichthyological Exploration of Freshwaters v. 16 (no. 4); ref. 28518] Jucuruçu, rio Jucuruçu, 2 kilometers before the city of Jucuruçu on road Itamaraju-Jucuruçu, middle of rio Jucuruçu basin, 16°50'10"S, 40°08'40"W, Bahia, Brazil. Holotype: MNRJ 28483. Paratypes: Many lots at AMNH, ANSP, AUM, FLMNH, and MNRJ, Type catalog: Ferraris 2007:422 [ref. 29155]. •Synonym of Trichomycterus immaculatus (Eigenmann & Eigenmann 1889) -- (Reis & de Pinna 2022:55 [ref. 39360]). •Valid as Trichomycterus pradensis Sarmento-Soares, Martins-Pinheiro, Aranda & Chamon 2005 -- (Ferraris 2007:422 [ref. 29155], Barbosa & Costa 2011:308 [ref. 31672], García-Melo et al. 2016:237 [ref. 34471], Donin et al. 2020:16 [ref. 37395], Silva et al. 2020:13 [ref. 37809], dos Reis et al. 2020:7 [ref. 37862], Costa & Katz 2022:19 [ref. 38971], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus pradensis Sarmento-Soares, Martins-Pinheiro, Aranda & Chamon 2005. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Jucuruçu, Bahia (Brazil). Habitat: freshwater, brackish.

pseudosilvinichthys, Trichomycterus Fernández [L.] & Vari [R. P.] 2004:876, Figs. 1-2 [Copeia 2004 (no. 4); ref. 28047] Río Amarillo at Famatina, 28°55'S, 67°31'W, eastern slope of Sierra de Famantina, Dept. Chilecito, Province de La Rioja, Argentina. Holotype: FML 2588. Paratypes: AMNH 233620 (3); CAS 218432 (1); FMNH 112974 (1); FML 2558 (6, 2 c&s), 2589 (9, 1 c&s), 2595 (2); MLP 7370 (3); USNM 374759 (4, 1 c&s). Type catalog: Ferraris 2007:422 [ref. 29155], Miquelarena & Nadalin 2014:11 [ref. 33466]. •Valid as Trichomycterus pseudosilvinichthys Fernández & Vari 2004 -- (Ferraris 2007:422 [ref. 29155], Fernández & Vari 2009:198 [ref. 30062], Koerber 2011:4 [ref. 31122], Koerber 2014:8 [ref. 33621], Sarmiento et al. 2014:193 [ref. 35004], Fernández et al. 2015:11 [ref. 35041], Mirande & Koerber 2015:38 [ref. 35117]). Current status: Valid as Trichomycterus pseudosilvinichthys Fernández & Vari 2004. Trichomycteridae: Trichomycterinae. Distribution: La Rioja Province, western Argentina and Bolivia. Habitat: freshwater.

puna, Trichomycterus Fernández [L.], Contrera [G.] & Bize [J. A.] 2023:457, Figs. 1, 2A, 3, 4A [Ichthyology & Herpetology v. 111 (no. 3); ref. 40542] El Angosto creek, 3 km southwest from Corral Blanco Village, Departamento Belén, Catamarca Province, Argentina, 26°29'56.40"S, 66°56'10.48"W, elevation 3,290 meters. Holotype: FACEN 151. Paratypes: FACEN, MACN. •Valid as Trichomycterus puna Fernández, Contrera & Bize 2023 -- (Koerber et al. 2024:3 [ref. 41721]). Current status: Valid as Trichomycterus puna Fernández, Contrera & Bize 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Corral Blanco drainage, southern Central Andes, Catamarca Province (Argentina). Habitat: freshwater.

punctatissimus, Trichomycterus Castelnau [F. L.] 1855:49, Pl. 24 (fig. 3) [Animaux nouveaux or rares v. 2; ref. 766] Rio Araguay, Brazil. Holotype (unique): MNHN B-0610 (poor condition). Type catalog: Bertin & Estève 1950:62 [ref. 19575], Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus punctatissimus Castelnau 1855 -- (Burgess 1989:322 [ref. 12860] as punctatissimum, de Pinna 1998:297 [ref. 23847], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Ferraris 2007:422 [ref. 29155]). Current status: Valid as Trichomycterus punctatissimus Castelnau 1855. Trichomycteridae: Trichomycterinae. Distribution: Araguaia River basin, Brazil. Habitat: freshwater.

punctulatus, Trichomycterus Valenciennes [A.] in Cuvier & Valenciennes 1846:488, Pl. 552 [Histoire naturelle des poissons v. 18; ref. 1011] Lima, Peru. Syntypes: MNHN 0000-3168 (5). Type catalog: Bertin & Estève 1950:60-61 [ref. 19575], Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus punctulatus Valenciennes 1846 -- (Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:322 [ref. 12860] as punctulatum, Arratia 1998:354 [ref. 23661], Castro et al. 1998:79 [ref. 24271], Fernández 2000:32 [ref. 26195] as punctatus, de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:422 [ref. 29155], Reis et al. 2016:17 [ref. 34496], Mesa S. et al. 2018:110 [ref. 35987], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" punctulatus, Apaza et al. 2024:373 [ref. 41296]). Current status: Valid as Trichomycterus punctulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Distribution: South America: western Peru endemic. Habitat: freshwater.

puriventris, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2012:156, Figs 1-3 [Vertebrate Zoology v. 62 (no. 2); ref. 32045] Rio Santissimo, tributary of Rio Grande, Rio Paraíba do Sul basin, Águas Frias, 2 km north of Santa Maria Madalena, 21°56'48.8"S, 41°58'03.6"W, Estado do Rio de Janeiro, Brazil, elevation 589 meters. Holotype: UFRJ 6005. Paratypes: UFRJ 5397 (23), 5398 (28), 5405 (6 c&s), 5644 (1), 5677 (1) •Valid as Trichomycterus puriventris Barbosa & Costa 2012 -- (Costa et al. 2022:512 [ref. 39820] in subgenus Psammocambeva, Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus puriventris Barbosa & Costa 2012. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Grande drainage, Rio Paraiba do Sul basin, Rio de Janeiro State (Brazil). IUCN (2022): Data Deficient. Habitat: freshwater.

quechuorum, Pygidium Steindachner [F.] 1900:207 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 37 (no. 18); ref. 14771] Arequipa, Río Chile, southern Peru. Syntypes: ZSM [old collection] (5) destroyed in WWII. Type catalog: Neumann 2006:282 [ref. 28925], Ferraris 2007:423 [ref. 29155]. Originally appeared as above, but later changed to "Pygidium (Trychomycterus Val.) quechuorum nob." when illustrated and described in more detail in Steindachner 1902:137, Pl. 4 (figs. 3-3a) [ref. 10435]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155]). •Valid as Trichomycterus quechuorum (Steindachner 1900) -- (Ortega & Vari 1986:16 [ref. 9708], Fernández & Chuquihuamaní 2007:55 [ref. 29320]). Current status: Valid as Trichomycterus quechuorum (Steindachner 1900). Trichomycteridae: Trichomycterinae. Distribution: Chile River, Peru. Habitat: freshwater.

quintus, Trichomycterus Costa [W. J. E. M.] in Costa, Mattos, Amorim, Vilardo & Katz 2020:76, Figs. 3A-B, 4 [Zoologischer Anzeiger v. 288; ref. 38088] Lower Rio Marimbondo, near the confluence with Rio Preto, Rio Paraibuna drainage, Rio Paraíba do Sul basin, Município de Resende, Rio de Janeiro State, Brazil, 22°20'03"S, 44°32'30"W, elevation about 1000 meters. Holotype: UFRJ 12601. Paratypes: UFRJ. •Valid as Trichomycterus quintus Costa 2020 -- (Costa et al. 2022:10 [ref. 39248], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus quintus Costa 2020. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Preto drainage, Rio Paraíba do Sul basin, Rio de Janeiro State (Brazil). IUCN (2025): Not Assessed. Habitat: freshwater.

ramosus, Trichomycterus Fernández [L. A.] 2000:350, Figs. 1-3 [Ichthyological Exploration of Freshwaters v. 11 (no. 4); ref. 25077] Laguna Blanca, Departamento de Belén, Catamarca, Argentina, elevation 3680 meters. Holotype: FML 2070. Paratypes: FML 2071 (11, 3 c&s). Plus non-type material. Type catalog: Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus ramosus Fernández 2000 -- (Fernández & Vari 2002:742 [ref. 26231], López et al. 2002:60 [ref. 26808], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], López et al. 2003:40 [ref. 27366], Fernádez & Schaefer 2003:357 [ref. 27407], Menni 2004:82 [ref. 28131], Fernández & Osinaga 2006:387 [ref. 28738], Ferraris 2007:422 [ref. 29155], Mirande & Koerber 2015:38 [ref. 35117], Fernández & Andreoli Bize 2018:366 [ref. 36232]). Current status: Valid as Trichomycterus ramosus Fernández 2000. Trichomycteridae: Trichomycterinae. Distribution: Laguna Blanca basin, Catamarca Province, Argentina. Habitat: freshwater.

regani, Pygidium Eigenmann [C. H.] 1917:696 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Tado, Río San Juan, Colombia. Holotype (unique): CAS 64591 [ex IU 13772]. Type catalog: Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus regani (Eigenmann 1917) -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Fernández & Schaefer 2005:73 [ref. 28090], Ferraris 2007:422 [ref. 29155], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926]). Current status: Valid as Trichomycterus regani (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: San Juan River basin, Colombia. Habitat: freshwater.

reinhardti, Pygidium Eigenmann [C. H.] 1917:699 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Rio Itabira at Miguel Burnier, tributary of Rio das Velhas, São Francisco basin, Minas Gerais, Brazil. Holotype (unique): FMNH 58081 [ex CM 7078]. Type catalog: Henn 1928:80 [ref. 12305], Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus reinhardti (Eigenmann 1917) -- (Burgess 1989:323 [ref. 12860], Fernández & Bichuette 2002:278 [ref. 26539], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Wosiacki & Garavello 2004:3 [ref. 27649], Bockmann et al. 2004:227 [ref. 27855], Alencar & Costa 2006:48 [ref. 28959], Ferraris 2007:422 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], Datovo et al. 2012:36 [ref. 31994], Donin et al. 2020:16 [ref. 37395], Costa & Katz 2021:18 [ref. 38252], Reis & de Pinna 2022:74 [ref. 39360], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus reinhardti (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: South America: upper das Velhas and upper Doce River drainages (Minas Gerais, Brazil). Habitat: freshwater.

retropinnis, Trichomycterus Regan [C. T.] 1903:624 [Annals and Magazine of Natural History (Series 7) v. 12 (no. 72) (art. 64); ref. 13401] St. Augustin, Andes of Colombia, elevation 5000 feet. Syntypes: BMNH 1899.8.21.12-13 (2). Type catalog: Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus retropinnis Regan 1903 -- (Burgess 1989:323 [ref. 12860] as retropinne, de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], Ferraris 2007:422 [ref. 29155], Castellanos-Morales 2008:312 [ref. 29836], Ardila Rodríguez 2011:10 [ref. 31409], Ardila Rodríguez 2011:21 [ref. 31410], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:12 [ref. 34399], Ardila Rodríguez 2016:16 [ref. 35108], Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926]). Current status: Valid as Trichomycterus retropinnis Regan 1903. Trichomycteridae: Trichomycterinae. Distribution: Upper Magdalena River basin, Colombia. Habitat: freshwater.

riojanum, Pygidium Berg [C.] 1897:269 [Anales del Museo Nacional de Historia Natural de Buenos Aires v. 5; ref. 14623] Arroyo of the Cordillera de la Province de La Rioja, Argentina. Holotype (unique): MACN 5175 (destroyed). Type catalog: Braga & Piacentino 1994:105 [ref. 23697], Ferraris 2007:422 [ref. 29155]. Gender of species needs research. •Status uncertain -- (Fernádez & Schaefer 2003:357 [ref. 27407], Menni 2004:82 [ref. 28131]). •Valid as Trichomycterus riojanus (Berg 1897) -- (Burgess 1989:323 [ref. 12860] as riojanum, Fernández 2000:32 [ref. 26195] as riojanum, Miquelarena & Fernández 2000:44 [ref. 27633], López et al. 2002:60 [ref. 26808], de Pinna & Wosiacki in Reis et al. 2003:283 [ref. 27061], López et al. 2003:40 [ref. 27366], Ferraris 2007:422 [ref. 29155], Fernández & Vari 2009:198 [ref. 30062], Mirande & Koerber 2015:38 [ref. 35117]). Current status: Valid as Trichomycterus riojanus (Berg 1897). Trichomycteridae: Trichomycterinae. Distribution: La Rioja Range, Argentina. Habitat: freshwater.

riosae, Trichomycterus Ardila Rodríguez [C. A.] 2025:13, Figs. 2E, 3A, 6D, 9A [Barranquilla, Departamento del Atlántico No. 104-109; ref. 42474] Quebrada del pueblo de San Antonio de Pereira, municipio de Rionegro, Departamento de Antioquia, Colombia. Holotype: CAR 1025 [ex CP-UCO 341]. Paratypes: CAR 1012 (?, ex CP-UCO 341), CP-UCO 341 (1). •Valid as Trichomycterus riosae Ardila Rodríguez 2025. Current status: Valid as Trichomycterus riosae Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Quebrada del pueblo de San Antonio de Pereira, Departamento de Antioquia, Colombia. Habitat: freshwater.

rivulatus, Trichomycterus Valenciennes [A.] in Cuvier & Valenciennes 1846:495 [Histoire naturelle des poissons v. 18; ref. 1011] Lake Titicaca, affluent of Apurimac, Guasacona, Peru. Syntypes: MNHN B-0586 (2, poor condition) Río Guasacona. Type catalog: Bertin & Estève 1950:61 [ref. 19575], Ferraris 2007:422 [ref. 29155]. •Valid as Trichomycterus rivulatus Valenciennes 1846 -- (Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:323 [ref. 12860] as rivulatum, Pequeño 1989:41 [ref. 14125], Arratia 1998:354 [ref. 23661], Dyer 2000:84 [ref. 26678] dated 1840, Fernández & Vari 2000:993 [ref. 25017], Fernández 2000:32 [ref. 26195] as rivulatum, de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Fernádez & Schaefer 2003:357 [ref. 27407], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:422 [ref. 29155], DoNascimiento et al. 2014:726 [ref. 33632], Sarmiento et al. 2014:193 [ref. 35004], García-Melo et al. 2016:237 [ref. 34471], Meza-Vargas et al. 2021:24 [ref. 39298] as cf. rivulatus, Chuctaya et al. 2022:49 [ref. 42137], Koerber et al. 2023:2 [ref. 40368], Koerber et al. 2024:3 [ref. 41721]). Current status: Valid as Trichomycterus rivulatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Distribution: South America: high altitude lakes and streams in central Andean range (Argentina, Bolivia, Chile and Peru). Habitat: freshwater.

roigi, Trichomycterus Arratia [G.] & Menu-Marque [S.] 1984:494, Figs. 1-10 [Zoologische Jahrbücher. Abteilung für Systematik, Ökologie und Geographie v. 111 (no. 4); ref. 8254] Río Pastos Chicos, Jujuy, northern Argentina, 23°24'S, 66°35'W. Holotype: MLP 8537 [ex 29-VIII-83-1]. Paratypes: KU 20187 (5); MLP 8538 [ex 29-VIII-83-2] (9); authors coll. 230281-1 (13, c&s), 230281-2 (16). Type catalog: Ferraris 2007:423 [ref. 29155], Miquelarena & Nadalin 2014:11 [ref. 33466]. •Valid as Trichomycterus roigi Arratia & Menu-Marque 1984 -- (Fernández & Vari 2000:993 [ref. 25017], Fernández 2000:32 [ref. 26195], Miquelarena & Fernández 2000:44 [ref. 27633], López et al. 2002:60 [ref. 26808], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], López et al. 2003:40 [ref. 27366], Fernádez & Schaefer 2003:357 [ref. 27407], Menni 2004:82 [ref. 28131], Ferraris 2007:423 [ref. 29155], Sarmiento et al. 2014:193 [ref. 35004], Fernández et al. 2015:12 [ref. 35041], Mirande & Koerber 2015:38 [ref. 35117], García-Melo et al. 2016:237 [ref. 34471], Fernández & Andreoli Bize 2018:366 [ref. 36232]). Current status: Valid as Trichomycterus roigi Arratia & Menu-Marque 1984. Trichomycteridae: Trichomycterinae. Distribution: Argentina and Bolivia. Habitat: freshwater.

romeroi, Pygidium Fowler [H. W.] 1941:4, Figs. 6-8 [Notulae Naturae (Philadelphia) No. 73; ref. 13236] Honda, Colombia. Holotype: ANSP 69331. Paratypes: ANSP 69332-35 (4). Type catalog: Böhlke 1984:163 [ref. 13621], Ferraris 2007:423 [ref. 29155]. •Valid as Trichomycterus romeroi (Fowler 1941) -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155], Castellanos-Morales 2008:312 [ref. 29836], DoNascimiento et al. 2017:70 [ref. 35633]). Current status: Valid as Trichomycterus romeroi (Fowler 1941). Trichomycteridae: Trichomycterinae. Distribution: Honda River basin, Colombia. Habitat: freshwater.

rosablanca, Trichomycterus Mesa S. [L. M.], Lasso [C. A.], Ochoa [L. E.] & DoNascimiento [C.] 2018:99, Figs. 1, 2A, 3, 4A, 5A, 6A, 7 [Biota Colombiana v. 19 (Sup. 1); ref. 35987] Las Sardinas Cave, Las Sardinas Creek, tributary of Horta River, Carare River drainage, Magdalena River basin, El Peñón, Santander, Colombia, 06°05'36.0"N, 73°49'42.7"W, elevation 2308 meters. Holotype: IAVHP 16086. Paratypes: IAVHP. •Valid as Trichomycterus rosablanca Mesa S., Lasso, Ochoa & DoNascimiento 2018 -- (Ardila Rodríguez 2023:5 [ref. 40606], Ardila Rodríguez 2023:7 [ref. 40609]). Current status: Valid as Trichomycterus rosablanca Mesa S., Lasso, Ochoa & DoNascimiento 2018. Trichomycteridae: Trichomycterinae. Distribution: South America: Las Sardinas cave and upper Carare River drainage, Magdalena River basin, Santander, Colombia. Habitat: freshwater.

rubbioli, Trichomycterus Bichuette [M. E.] & Rizzato [P. P.] 2012:51 [Zootaxa No. 3480; ref. 32163] Lapa dos Peixes cave, 13°49'21.78"S, 43°57'24.39"W, middle São Francisco River basin, Carinhanha County, Bahia, Brazil. Holotype: MZUSP 110977. Paratypes: MZUSP 110978 - 110986 (9) Named for Ezio Rubbioli; the spelling rubbioli is treated by the authors as a noun in apposition. •Valid as Trichomycterus rubbioli Bichuette & Rizzato 2012 -- (García-Melo et al. 2016:237 [ref. 34471], Silva et al. 2020:13 [ref. 37809]). Current status: Valid as Trichomycterus rubbioli Bichuette & Rizzato 2012. Trichomycteridae: Trichomycterinae. Distribution: South America: caves, middle São Francisco River basin (Bahia State, Brazil). Habitat: freshwater.

rubiginosus, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2010:114, Figs. 8, 18 [Ichthyological Exploration of Freshwaters v. 21 (no. 2); ref. 30782] Small stream tributary to Rio Paraopeba, Pedra Vermelha, ca. 20°19'S, 44°01'W, Rio São Francisco basin, Município de Moeda, Estado de Minas Gerais, Brazil, elevation 820 meters. Holotype: MZUSP 104537. Paratypes: MZUSP 37268 (20). •Valid as Trichomycterus rubiginosus Barbosa & Costa 2010 -- (Barbosa & Katz 2016:262 [ref. 34950], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus rubiginosus Barbosa & Costa 2010. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio São Francisco basin (Minas Gerais, Brazil). Habitat: freshwater.

ruficaudatus, Trichomycterus Costa [W. J. E. M.], Mattos [J. L. O.], Amorim [P. F.], Gago [I. C. V.] & Katz [A. M.] 2025:177, Figs. 1-3 [Zootaxa 5689 (no. 1); ref. 42356] Rio Mocotó, a tributary of Rio Imbé, Sistema Lagoa Feia, Município de Campos dos Goytacazes, Rio de Janeiro State, Brazil, 21˚50'26"S, 41˚44'22"W, elevation about 20 meters. Holotype: UFRJ 14437. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus ruficaudatus Costa, Mattos, Amorim, Gago & Katz 2025. Current status: Valid as Trichomycterus ruficaudatus Costa, Mattos, Amorim, Gago & Katz 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Mocotó River drainage, Imbé River basin, Lagoa Feia system, Rio de Janeiro State, Brazil. Habitat: freshwater.

ruitoquensis, Trichomycterus Ardila Rodríguez [C. A.] 2007:[3], 3 pls.; figs. 1-8 [Peces del Departamento de Santander - Colombia No. 3; ref. 29569] Río Riofrío, sector "La Clausen", tributary to río de Oro, cuennca alta del río Lebrija, sistema río Magdalena, Municipio de Floridablanca, Departamento de Santander, Colombia, elevation 1000 meters. Holotype: CAR 340. Paratypes: CAR 37 (66 ex 73), 88 (6), 89 (21), 325 (23), 331 (4), 332 (13); IAvH-P 4342 (22), 4344 (14); ICNMNH 16920 [ex CAR 37] (7); IMCN 4.195 (5), Type catalog: DoNascimiento et al. 2016:420 [ref. 34787], Mojica & Agudelo-Zamora 2018:39 [ref. 36127]. •Valid as Trichomycterus ruitoquensis Ardila Rodríguez 2007 -- (Ardila Rodríguez 2011:11 [ref. 31409], Ardila Rodríguez 2011:21 [ref. 31410], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:11 [ref. 34399], García-Melo et al. 2016:237 [ref. 34471], Ardila Rodríguez 2016:15 [ref. 35108], Ardila Rodríguez 2017:10 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:9 [ref. 35926], Mesa S. et al. 2018:110 [ref. 35987], DoNascimiento & Prada-Pedreros 2020:12 [ref. 37386], Ardila Rodríguez 2023:7 [ref. 40609], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" ruitoquensis). Current status: Valid as Trichomycterus ruitoquensis Ardila Rodríguez 2007. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Río Magdalena basin (Santander, Colombia). Habitat: freshwater.

sainthilairei, Trichomycterus Katz [A. M.] & Costa [W. J. E. M.] in Costa & Katz 2021:17, Figs. 2H, 2O, 3C-D, 4H, 4Q [Systematics and Biodiversity v. 19 (no. 6); ref. 38252] Córrego Tamborete, Camping Canarinho, Rio Grande drainage, Rio Paraná basin, Município de Capitólio, Estado de Minas Gerais, Brazil, 20°38'53"S, 46°09'55"W, elevation 875 meters. Holotype: UFRJ 10215. Paratypes: CICCAA, MNRJ, MZUSP, UFRJ. •Valid as Trichomycterus sainthilairei Katz & Costa 2021 -- (Costa et al. 2023:30 [ref. 40170], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus sainthilairei Katz & Costa 2021. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Grande drainage, upper Rio Paraná basin (Minas Gerais, Brazil). Habitat: freshwater.

sanchezi, Trichomycterus Ardila Rodríguez [C. A.] 2024:7, Figs. 1, 2, 5A, 6A, 7A, 8A, 10A [Barranquilla, Departamento del Atlántico No. 93; ref. 41039] Quebrada el Higuerón, vereda El Macanillo, municipio Palmas del Socorro, Departamento de Santander, Colombia, elevation 1200 meters. Holotype: CAR 1005. Paratypes: CAR 1008 (53), CAR 2998 (47). •Valid as Trichomycterus sanchezi Ardila Rodríguez 2024 -- (Ardila Rodríguez 2025:5 [ref. 42104]). Current status: Valid as Trichomycterus sanchezi Ardila Rodríguez 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: el Higuerón drainage, Santander, Colombia. Habitat: freshwater.

sandovali, Trichomycterus Ardila Rodríguez [C. A.] 2006:4, 3 col. Figs., text figs. 1-10. [Peces del Departamento de Santander - Colombia Barranquilla No. 2; ref. 28863] Don Juan cave, Municipality of Zapatoca, Departamento de Santander, Colombia. Holotype: CAR 116. Paratypes: AS 115 (5). •Valid as Trichomycterus sandovali Ardila Rodríguez 2006 -- (Castellanos-Morales 2011:34 [ref. 31477], Rizzato et al. 2011:478 [ref. 31516], Bichuette & Rizzato 2012:49 [ref. 32163], García-Melo et al. 2016:237 [ref. 34471], DoNascimiento et al. 2017:70 [ref. 35633], Mesa S. et al. 2018:110 [ref. 35987], Castellanos-Morales 2018:127 [ref. 35988], Ardila Rodríguez 2023:9 [ref. 40606], Ardila Rodríguez 2023:7 [ref. 40609], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" sandovali). Current status: Valid as Trichomycterus sandovali Ardila Rodríguez 2006. Trichomycteridae: Trichomycterinae. Distribution: South America: Don Juan Cave, Muncipality of Zapatoca (Santander, Colombia). Habitat: freshwater.

sanmartinensis, Trichomycterus Ardila Rodríguez [C. A.] 2018:13, Fig. 5 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Cano Minas, afluente del río San Alberto, éste desemboca al río Lebrija, municipio de San Martín, Departamento del Cesar, Colombia. Holotype: CAR 803. Paratypes: CAR. •Valid as Trichomycterus sanmartinensis Ardila Rodríguez 2018. •Synonym of Trichomycterus ruitoquensis Ardila Rodríguez 2007 -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386]). Current status: Synonym of Trichomycterus ruitoquensis Ardila Rodríguez 2007. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

santaeritae, Pygidium Eigenmann [C. H.] 1918:341, Pl. 52 (fig. 5) [Memoirs of the Carnegie Museum v. 7 (no. 5); ref. 1239] Rio Preto at Santa Rita, Brazil. Holotype (unique): FMNH 58577 [ex CM 7599]. Type catalog: Henn 1928:81 [ref. 12305], Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:423 [ref. 29155]. Originally as santae-ritae. •Valid as Trichomycterus santaeritae (Eigenmann 1918) -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155], Costa et al. 2020:2919 [ref. 37529], Costa et al. 2020:81 [ref. 38088], Reis & de Pinna 2022:23 [ref. 39360], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662], Costa et al. 2025:182 [ref. 42356]). Current status: Valid as Trichomycterus santaeritae (Eigenmann 1918). Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Preto drainage, Paraíba do Sul River basin, Minas Gerais and Rio de Janeiro states (Brazil) endemic. IUCN (2022): Data Deficient. Habitat: freshwater.

santanderensis, Trichomycterus Castellanos-Morales [C. A.] 2007:50, Figs. 2-3 [Zootaxa No. 1541; ref. 29323] Cave El Puente, 7°09'49"N, 73°17'21"W, Portugal Street, Municipio of Lebrija, upper Lebrija River basin, Santander, Colombia. Holotype: CAC-CDMB 035. Paratypes: CAC-CDMB 051 (1). Plus non-type material: CAC-CDMB 050 and 052, dissected. •Valid as Trichomycterus santanderensis Castellanos-Morales 2007 -- (da Silva et al. 2010:50 [ref. 30755], Castellanos-Morales 2011:34 [ref. 31477], Rizzato et al. 2011:478 [ref. 31516], Bichuette & Rizzato 2012:49 [ref. 32163], García-Melo et al. 2016:237 [ref. 34471], Nascimento et al. 2017:511 [ref. 35440], DoNascimiento et al. 2017:70 [ref. 35633], Castellanos-Morales 2018:127 [ref. 35988], Ardila Rodríguez 2023:4 [ref. 40606], Ardila Rodríguez 2023:7 [ref. 40609]). Current status: Valid as Trichomycterus santanderensis Castellanos-Morales 2007. Trichomycteridae: Trichomycterinae. Distribution: South America: El Puenta Cave, upper Lebrija River basin, Santander, Colombia. Habitat: freshwater.

santuarioensis, Trichomycterus Ardila Rodríguez [C. A.] 2024:14, Figs. 2, 6A, 7D, 10A [Barranquilla, Departamento del Atlántico No. 98; ref. 41346] Cueva El Santuario, Vereda La Calera, municipio de Curití, Departamento de Santander, Colombia. Holotype: CAR 1031. Paratypes: CAR 938 (17). •Valid as Trichomycterus santuarioensis Ardila Rodríguez 2024. Current status: Valid as Trichomycterus santuarioensis Ardila Rodríguez 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Cueva El Santuario, municipio de Curití, Santander, Colombia. Habitat: freshwater.

saquarema, Trichomycterus Costa [W. J. E. M.], Katz [A. M.], Vilardo [P. J.] & Amorim [P. F.] in Costa, Mattos, Vilardo, Amorim & Katz 2022:503, Figs. 2D, 3C, 4D, 13-14 [Taxonomy v. 2; ref. 39820] Rio Roncador, a tributary of the Lagoa de Saquarema, Universalismo road, Saquarema Municipality, Rio de Janeiro State, Brazil, 22°52'56"S, 42°39'02"W, elevation about 90 meters. Holotype: UFRJ 13019. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus saquarema Costa, Katz, Vilardo & Amorim 2022 -- (Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus saquarema Costa, Katz, Vilardo & Amorim 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Roncador drainage, Paraíba do Sul River basin, Rio de Janeiro State (Brazil). IUCN (2025): Not Assessed. Habitat: freshwater.

saturatus, Trichomycterus (Cryptocambeva) Costa [W. J. E. M.], Katz [A. M.] & Azevedo-Santos [V. M.] in Costa, Azevedo-Santos, Mattos & Katz 2023:17, Figs. 5C, 6E, 7C, 10B, 11 [Fishes v. 8 (no. 4): 206; ref. 40170] Córrego Tamborete, a tributary of Rio Grande at the Furnas dam, upper Rio Paraná basin, Capitólio municipality, Minas Gerais State, Brazil, 20°38'53"S, 46°09'55"W, elevation about 875 meters. Holotype: UFRJ 13378. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus saturatus Costa, Katz & Azevedo-Santos 2023. Current status: Valid as Trichomycterus saturatus Costa, Katz & Azevedo-Santos 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: middle Rio Grande drainage, upper Paraná River basin, Minas Gerais State, Brazil. Habitat: freshwater.

schmidti, Pygidium Berg [C.] 1897:266 [Anales del Museo Nacional de Historia Natural de Buenos Aires v. 5; ref. 14623] Río de Belén, Catamarca Province, Argentina. Syntypes: ?BMNH 1898.9.23.3 (1); MACN 2361 (1), 4595 (1), 5164 (2), 5176 (1). Type catalog: Braga & Piacentino 1994:105 [ref. 23697] as schmidtii, Ferraris 2007:416 [ref. 29155]. •Synonym of Trichomycterus borellii Boulenger 1897 -- (de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Ferraris 2007:416 [ref. 29155], Mirande & Koerber 2015:37 [ref. 35117]). Current status: Synonym of Trichomycterus borellii Boulenger 1897. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

septemradiatus, Trichomycterus Katz [A. M.], Barbosa [M. A.] & Costa [W. J. E. M.] 2013:360, Fig. 1 [Ichthyological Exploration of Freshwaters v. 23 (no. 4) (for 2012); ref. 32530] Stream tributary of Cuiabá river, tributary of Grande river, Paraná river basin, 21°04'24"S. 46°12'04"W, Estado de Minas Gerais, Brazil, altitude 856 meters. Holotype: UFRJ 8576. Paratypes: FRJ 7278 (11). •Valid as Trichomycterus septemradiatus Katz, Barbosa & Costa 2013 -- (Azevedo-Santos et al. 2019:5 [ref. 36506], Costa & Katz 2021:18 [ref. 38252], Costa et al. 2023:31 [ref. 40170], Vilardo et al. 2023:5 [ref. 40643]). Current status: Valid as Trichomycterus septemradiatus Katz, Barbosa & Costa 2013. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Sapucaí subdrainage, Rio Grande drainage, upper Paraná river basin (Minas Gerais State, southeastern Brazil). Habitat: freshwater.

septentrionale, Pygidium Behre [E. H.] 1928:309, Pl. 18 [Annals of the Carnegie Museum v. 18 (nos 2-4) (art. 5); ref. 15838] Salao Creek into Río Chiriquí del Tire above Caldera, Pacific Panama, about elevation 4000 feet. Holotype: FMNH 59522 [ex CM 8515]. Paratypes: FMNH 59195 [ex CM 8516] (1). Additional material: (10) BMNH 1925.3.6.117-118 (2), CAS 77009 [ex IU 17406] (3), UMMZ 145773-74 (1, 1). Type catalog: Henn 1928:81 [ref. 12305], Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:424 [ref. 29155]. •Valid as Trichomycterus septentrionale (Behre 1928) -- (Burgess 1989:323 [ref. 12860]). •Synonym of Trichomycterus striatus (Meek & Hildebrand 1913) -- (Bussing 1998:159 [ref. 24179], de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Ferraris 2007:424 [ref. 29155], Angulo et al. 2018:532 [ref. 35937]). Current status: Synonym of Trichomycterus striatus (Meek & Hildebrand 1913). Trichomycteridae: Trichomycterinae. Habitat: freshwater.

simacotaensis, Trichomycterus Ardila Rodríguez [C. A.] 2024:16, Figs. 1, 4, 6E, 8A, 10B [Barranquilla, Departamento del Atlántico No. 98; ref. 41346] Cueva Hacienda Santa Bárbara, municipio de Simacota, Departamento de Santander, Colombia. Holotype: CAR 1032. Paratypes: CAR 258 (6). •Valid as Trichomycterus simacotaensis Ardila Rodríguez 2024 -- (Ardila Rodríguez 2025:5 [ref. 42104]). Current status: Valid as Trichomycterus simacotaensis Ardila Rodríguez 2024. Trichomycteridae: Trichomycterinae. Distribution: South America: Cueva Hacienda Santa Bárbara, municipio de Simacota, Santander, Colombia. Habitat: freshwater.

sketi, Trichomycterus Castellanos-Morales [C. A.] 2011:34, Figs. 1-4 [Biota Colombiana v. 11 (1-2); ref. 31477] Municipio La Paz, vereda Casas Blancas, Cueva del Indio, 6°50'21"N, 73°05'18"W, departamento de Santander, Colombia, elevation 2157 meters. Holotype: CAC-CDMB 104. Paratypes: ANSP 189652 (1); CAC-CDMB 105 (1), 110 (2, c&s); IAvH-P 11806 (2); MBUCV-V-35641 (1); MLS 1256 (1); UIS-Th 1718 (1). Plus non-type material. Type catalog: DoNascimiento et al. 2016:421 [ref. 34787]. •Valid as Trichomycterus sketi Castellanos-Morales 2011 -- (Bichuette & Rizzato 2012:49 [ref. 32163], García-Melo et al. 2016:237 [ref. 34471], DoNascimiento et al. 2017:70 [ref. 35633], Castellanos-Morales 2018:127 [ref. 35988], Miranda & Fernández 2020:463 [ref. 37703], Ardila Rodríguez 2023:5 [ref. 40606], Ardila Rodríguez 2023:7 [ref. 40609]). Current status: Valid as Trichomycterus sketi Castellanos-Morales 2011. Trichomycteridae: Trichomycterinae. Distribution: South America: Indio Cave, upper río Opón drainage, Magdalena River basin, Santander, Colombia. Habitat: freshwater.

spectrum, Trichomycterus DoNascimiento [C.] & Prada-Pedreros [S.] 2020:4, Figs. 2-4 [Journal of Fish Biology v. 96 (no. 4); ref. 37386] Cueva de Alejo, Río Ranchería basin, Hato Nuevo, Guajira, Colombia, 11°06'09.5"N, 72°49'56.7"W, elevation 947 meters. Holotype: MPUJ 4190. Paratypes: IAVHP, MBUCV, MPUJ. •Valid as Trichomycterus spectrum DoNascimiento & Prada-Pedreros 2020 -- (Ardila Rodríguez 2023:5 [ref. 40606]). Current status: Valid as Trichomycterus spectrum DoNascimiento & Prada-Pedreros 2020. Trichomycteridae: Trichomycterinae. Distribution: South America: Alejo cave, Río Ranchería basin, Guajira, Colombia. Habitat: freshwater.

spegazzinii, Pygidium Berg [C.] 1897:267 [Anales del Museo Nacional de Historia Natural de Buenos Aires v. 5; ref. 14623] Río de Cachi, Salta Province, Argentina, elevation 2500-2800 meters. Syntypes: BMNH 1898.9.23.1-2 (2); MACN 4925 (now 19), 5173 (2); SMF 831 (1). Type catalog: Braga & Piacentino 1994:106 [ref. 23697], Ferraris 2007:423 [ref. 29155]. •Valid as Trichomycterus spegazzinii (Berg 1897) -- (Arratia & Menu-Marque 1984:515 [ref. 8254], Burgess 1989:323 [ref. 12860], Fernández 2000:32 [ref. 26195], Miquelarena & Fernández 2000:44 [ref. 27633], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], López et al. 2003:40 [ref. 27366], Menni 2004:82 [ref. 28131], Ferraris 2007:423 [ref. 29155], Sarmiento et al. 2014:193 [ref. 35004], Fernández et al. 2015:11 [ref. 35041], Mirande & Koerber 2015:38 [ref. 35117]). Current status: Valid as Trichomycterus spegazzinii (Berg 1897). Trichomycteridae: Trichomycterinae. Distribution: Argentina and Bolivia. Habitat: freshwater.

spelaeus, Trichomycterus DoNascimiento [C.], Villarreal [O.] & Provenzano [F.] 2001:3, Figs 1-4 [Boletin de la Sociadad Venezolana Espeleologia No. 35; ref. 27231] Cueva Punto Fijo, en el caserío Punto Fijo, 7.5 kilometers north of Cerro Yolanda, Edo. Zulia, Venezuela, 10°57'10:N, 72°28'06"W. Holotype: MBUCV-V-29602. Paratypes: MBUCV-V-29603 (2). Type catalog: Ferraris 2007:423 [ref. 29155]. •Valid as Trichomycterus spelaeus DoNascimiento, Villarreal & Provenzano 2001 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Bichuette & Trajano 2004:243 [ref. 27856], Ardila Rodríguez 2006:7 [ref. 28863], Proudlove 2006:147 [ref. 28992], Castellanos-Morales 2007:49 [ref. 29323], Ferraris 2007:423 [ref. 29155], Rizzato et al. 2011:478 [ref. 31516], Bichuette & Rizzato 2012:49 [ref. 32163], García-Melo et al. 2016:237 [ref. 34471]). Current status: Valid as Trichomycterus spelaeus DoNascimiento, Villarreal & Provenzano 2001. Trichomycteridae: Trichomycterinae. Distribution: Punto Fijo Cave, upper Guasare River basin, Venezuela. Habitat: freshwater.

spilosoma, Pygidium Regan [C. T.] 1913:468 [Annals and Magazine of Natural History (Series 8) v. 12 (no. 71); ref. 3656] Río San Juan, Colombia. Syntypes: BMNH 1910.7.11.106-107 (2), 1910.7.11.115 (1 skeleton). Type catalog: Ferraris 2007:423 [ref. 29155]. •Valid as Trichomycterus spilosoma (Regan 1913) -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Fernández & Schaefer 2005:73 [ref. 28090], Ferraris 2007:423 [ref. 29155], Ardila Rodríguez 2011:11 [ref. 31409], Ardila Rodríguez 2011:1 [ref. 31410], Ardila Rodríguez 2014:11 [ref. 33769], Barriga Salazar 2014:111 [ref. 35745], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926]). Current status: Valid as Trichomycterus spilosoma (Regan 1913). Trichomycteridae: Trichomycterinae. Distribution: San Juan River basin, Colombia and Ecuador. Habitat: freshwater.

steindachneri, Trichomycterus DoNascimiento [C.], Prada-Pedreros [S.] & Guerrero-Kommritz [J.] 2014:718, Figs. 1a, 2a, 3a, 4-5 [Neotropical Ichthyology v. 12 (no. 4); ref. 33632] Cundinamarca, Ubaque, vereda Pueblo Nuevo, quebrada El Charco, tributary of quebrada Santa Bárbara, río El Palmar system, río Orinoco basin, 4°31’10.3"N, 73°58’44.6"W, Colombia, elevation 2700 meters. Holotype: MPUJ 4191. Paratypes: MBUCV-V, MPUJ. •Valid as Trichomycterus steindachneri DoNascimiento, Prada-Pedreros & Guerrero-Kommritz 2014 -- (García-Melo et al. 2016:237 [ref. 34471], Terán et al. 2017:10 [ref. 35391], DoNascimiento et al. 2017:70 [ref. 35633], Miranda & Fernández 2020:463 [ref. 37703]). Current status: Valid as Trichomycterus steindachneri DoNascimiento, Prada-Pedreros & Guerrero-Kommritz 2014. Trichomycteridae: Trichomycterinae. Distribution: Orinoco River basin, Colombia. Habitat: freshwater.

stellatum, Pygidium Eigenmann [C. H.] 1918:308, Pl. 47 (fig. 1) [Memoirs of the Carnegie Museum v. 7 (no. 5); ref. 1239] Quebrada Sarjento, Colombia. Holotype: FMNH 58101 [ex CM 7097]. Paratypes: CAS 58121 [ex IU 13814] (3), FMNH 58102 (3). Additional material: (30) CAS 58122 (2), 58125 (2), 64592 (3); FMNH 58100 (3), 58103-04 (3, 9). Type catalog: Henn 1928:81 [ref. 12305], Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:424 [ref. 29155]. •Valid as Trichomycterus stellatus (Eigenmann 1918) -- (Burgess 1989:323 [ref. 12860] as stellatum, de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:424 [ref. 29155], Castellanos-Morales 2008:312 [ref. 29836], DoNascimiento et al. 2017:70 [ref. 35633]). Current status: Valid as Trichomycterus stellatus (Eigenmann 1918). Trichomycteridae: Trichomycterinae. Distribution: Rivers of Andian eastern cordillera, Colombia. Habitat: freshwater.

straminium, Pygidium Eigenmann [C. H.] 1917:694 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Quebrada del Mango, Santander, Colombia. Holotype: FMNH 58105 [ex CM 7101]. Paratypes: (10) CAS 58148 [ex IU 13818] (1), 58105 [ex IU 13804] (4); FMNH 58091-92 (1, 3). Additional material: CAS 58124 [ex IU 13826] (2), 58126 [ex IU 13819] (6). Type catalog: Henn 1928:81 [ref. 12305], Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:424 [ref. 29155]. •Valid as Trichomycterus straminius (Eigenmann 1917) -- (Burgess 1989:323 [ref. 12860] as straminium, de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:424 [ref. 29155], Ardila Rodríguez 2007:[9] [ref. 29569], Castellanos-Morales 2008:312 [ref. 29836], DoNascimiento et al. 2017:70 [ref. 35633], Castellanos-Morales 2018:127 [ref. 35988], Ardila Rodríguez 2023:7 [ref. 40609], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" straminius). Current status: Valid as Trichomycterus straminius (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: South America: Andean streams in Cundinamaca and Santander (Colombia). Habitat: freshwater.

striatum, Pygidium Meek [S. E.] & Hildebrand [S. F.] 1913:78 [Field Museum of Natural History, Publications, Zoölogical Series v. 10 (no. 8); ref. 12295] Río Cana at Cana, Río Tuyra system, Panama. Holotype: FMNH 7579. Paratypes: CAS 64593 [ex IU 14010] (1); FMNH 26660-62 (3), 26663-76 (14), 55233 (1); USNM 78374 (4), 78375 (13, now 11, 2 unaccounted for). Type catalog: Ibarra & Stewart 1987:73 [ref. 12367], Ferraris & Vari 1992:42 [ref. 19771] with remarks on types, Ferraris 2007:424 [ref. 29155]. •Valid as Pygisium striatum Meek & Hildebrand 1913 -- (Bussing 1987:110 [ref. 22927]). •Valid as Trichomycterus striatus (Meek & Hildebrand 1913) -- (Burgess 1989:323 [ref. 12860] as striatum, Bussing 1998:159 [ref. 24179], Fernández 2000:32 [ref. 26195], de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Ferraris 2007:424 [ref. 29155], Ardila Rodríguez 2007:[8] [ref. 29569], Castellanos-Morales 2008:312 [ref. 29836], Ardila Rodríguez 2011:11 [ref. 31409], Ardila Rodríguez 2011:22 [ref. 31410], Angulo et al. 2013:993 [ref. 33194], Ardila Rodríguez 2014:11 [ref. 33769], Ardila Rodríguez 2016:12 [ref. 34399], García-Melo et al. 2016:236 [ref. 34471], Ardila Rodríguez 2016:16 [ref. 35108], DoNascimiento et al. 2017:70 [ref. 35633], Angulo et al. 2018:532 [ref. 35937], Castellanos-Morales 2018:127 [ref. 35988], Angulo et al. 2020:9 [ref. 37425], Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" striatus). Current status: Valid as Trichomycterus striatus (Meek & Hildebrand 1913). Trichomycteridae: Trichomycterinae. Distribution: Central America, northwestern South America: Costa Rica, Panama and Colombia. Habitat: freshwater.

suaitaensis, Trichomycterus Ardila Rodríguez [C. A.] 2025:7, Figs. 1-2, 5-7 [Barranquilla, Departamento del Atlántico No. 103; ref. 42585] Quebrada La Vega, cuenca del río Suárez, Municipio de Suaita, Provincia Comunera, Departamento de Santander, Colombia. Holotype: CAR 1048. Paratypes: CAR 1061 (8), 1077 (6), IMCN (4). •Valid as Trichomycterus suaitaensis Ardila Rodríguez 2025. Current status: Valid as Trichomycterus suaitaensis Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Suárez drainage, Santander, Colombia. Habitat: freshwater.

sucrensis, Trichomycterus Ardila Rodríguez [C. A.] 2018:16, Fig. 9 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Afluente quebrada Cappa, Vereda Pena Blanca, municipio de Sucre, Departamento de Santander, Colombia, 5°55'05"N, 73°47'29"O. Holotype: CAR 806. Paratypes: CAR. •Valid as Trichomycterus sucrensis Ardila Rodríguez 2018 -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386], Ardila Rodríguez 2023:7 [ref. 40609], Ardila Rodríguez 2025:5 [ref. 42104]). Current status: Valid as Trichomycterus sucrensis Ardila Rodríguez 2018. Trichomycteridae: Trichomycterinae. Distribution: South America: streams in Municipio de Sucre, Departamento de Santander, Colombia. Habitat: freshwater.

taczanowskii, Trichomycterus Steindachner [F.] 1882:177 [Anzeiger der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftlichen Klasse v. 19 (no. 19); ref. 20487] Río Huambo and Río deTortora near Chirimoto, Peru. Syntypes: (several) NMW 43387 (1). Type catalog: Ferraris 2007:424 [ref. 29155]. Species later illustrated and described in more detail in Steindachner 1882:22, Pl. 4 (figs. 1-1b) [ref. 14353]. •Valid as Trichomycterus taczanowskii Steindachner 1882 -- (Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:424 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Jiménez-Prado et al. 2015:206 [ref. 34894]). Current status: Valid as Trichomycterus taczanowskii Steindachner 1882. Trichomycteridae: Trichomycterinae. Distribution: Peru and Ecuador. Habitat: freshwater.

taenia, Trichomycterus Kner [R.] 1863:228, "Fig. 16" (unpublished) [Sitzungsberichte der Königlich Bayerischen Akademie der Wissenschaften zu München 1863, v. 2; ref. 5002] Western slope of the Andes of Ecuador. Holotype (unique): ZSM [old collection] destroyed in WWII. Type catalog: Neumann 2006:282 [ref. 28925], Ferraris 2007:424 [ref. 29155]. Also appeared as new in Kner & Steindachner 1864:52, Pl. 6 (fig. 1) [ref. 2649]. •Valid as Trichomycterus taenia Kner 1863 -- (Ovchynnyk 1967:36 [ref. 37559], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:323 [ref. 12860] as taenium, de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Ferraris 2007:424 [ref. 29155], Castellanos-Morales 2008:312 [ref. 29836], Ardila Rodríguez 2011:21 [ref. 31410], Datovo et al. 2012:36 [ref. 31994], Barriga Salazar 2014:111 [ref. 35745], Jiménez-Prado et al. 2015:204 [ref. 34894], Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:70 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926], Ardila Rodríguez 2019:9 [ref. 36944]). Current status: Valid as Trichomycterus taenia Kner 1863. Trichomycteridae: Trichomycterinae. Distribution: South America: Pacific drainages (Ecuador, Peru and Colombia). Habitat: freshwater.

taeniops, Trichomycterus Fowler [H. W.] 1954:36, Fig. 635 [Arquivos de Zoologia do Estado de São Paulo v. 9; ref. 1465] Acobamba, near Tarma, Peru, elevation 2000 meters. Type catalog: Ferraris 2007:424 [ref. 29155]. Replacement name for Pygidium tenue Fowler 1945, considered to be preoccupied in Trichomycterus by Trichomycterus tenuis Weyenburgh 1877. •Valid as Trichomycterus taeniops Fowler 1954 -- (de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Ferraris 2007:424 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], García-Melo et al. 2016:237 [ref. 34471], Chuctaya et al. 2022:49 [ref. 42137]). Replacement Name. Current status: Valid as Trichomycterus taeniops Fowler 1954. Trichomycteridae: Trichomycterinae. Distribution: South America: Peru and Ecuador. Habitat: freshwater.

tantalus, Trichomycterus Reis [V. J. C.], Vieira [F.] & de Pinna [M. C. C.] in Reis & de Pinna 2022:77, Figs. 6, 35 [Zoological Journal of the Linnean Society v. 197 (no. 2); ref. 39360] Main stream of Rio Doce, Baguari, Minas Gerais, Brazil, 19°1'33.62"S, 42°7'29.12"W. Holotype: MZUSP 123369. Paratypes: MZUFV 2565 (1), MZUSP 126759 (23). •Valid as Trichomycterus tantalus Reis, Vieira & de Pinna 2022 -- (Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus tantalus Reis, Vieira & de Pinna 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: middle Rio Doce and Rio Matipó drainages, Minas Gerais (southeastern Brazil). Habitat: freshwater.

tenue, Pygidium Fowler [H. W.] 1945:6, Figs. 7-9 [Notulae Naturae (Philadelphia) No. 159; ref. 13141] Acobamba, near Tarma, Río Ucayali basin, Peru, elevation 2000 meters. Holotype (unique): ANSP 71638. Type catalog: Böhlke 1984:163 [ref. 13621], Ferraris 2007:424 [ref. 29155]. Considered by Fowler 1954 to be subjectively invalid; preoccupied in Trichomycterus by Trichomycterus tenuis Weyenbergh 1877; replaced by Trichomycterus taeniops Fowler 1954. •Valid as Trichomycterus tenue (Fowler 1945) -- (Arratia & Menu-Marque 1984:515 [ref. 8254], Ortega & Vari 1986:16 [ref. 9708], Menni 2004:82 [ref. 28131], Fernández et al. 2015:12 [ref. 35041] as tenue and cf. tenue). •In the synonymy of Trichomycterus taeniops Fowler 1954 -- (de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Ferraris 2007:424 [ref. 29155]). 2°Homonym. Current status: Synonym of Trichomycterus taeniops Fowler 1954. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

tenuis, Trichomycterus Weyenbergh [H.] 1877:12, Pl. 3 (figs. a-c) [Actas de la Academia Nacional de Ciencias Exactas, Buenos Aires. v. 3 (no. 1); ref. 14248] Small lake in Sierra de Cordoba, near Villa Cruz del Eje, Santa Fe, Argentina. Syntypes: (several) MSNG 8852 (2). Type catalog: Tortonese 1963:310 [ref. 10351], Ferraris 2007:424 [ref. 29155]. •Valid as Trichomycterus tenuis Weyenbergh 1877 -- (Burgess 1989:323 [ref. 12860], Fernández 2000:32 [ref. 26195], Miquelarena & Fernández 2000:44 [ref. 27633], López et al. 2002:60 [ref. 26808] dated 1979, de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], López et al. 2003:40 [ref. 27366], Ferraris 2007:424 [ref. 29155], Mirande & Koerber 2015:38 [ref. 35117]). Current status: Valid as Trichomycterus tenuis Weyenbergh 1877. Trichomycteridae: Trichomycterinae. Distribution: Córdoba Sierra, Argentina. Habitat: freshwater.

tete, Trichomycterus Barbosa [M. A.] & Costa [W. J. E. M.] 2011:308, Figs. 1-3 [Vertebrate Zoology v. 61 (no. 3); ref. 31672] Cachoeira do Giló, tributary of rio Brumado, rio de Contas basin, 13°29'44.7"S, 41°53'05.0"W, Município de rio de Contas, Bahia State, Brazil. Holotype: UFRJ 8062. Paratypes: UFRJ 7774 (3), 7775 (9). Plus additional non-type material. •Valid as Trichomycterus tete Barbosa & Costa 2011 -- (Silva et al. 2020:13 [ref. 37809], Costa & Katz 2022:19 [ref. 38971], Vilardo et al. 2023:5 [ref. 40643], Costa et al. 2024:229 [ref. 40868], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus tete Barbosa & Costa 2011. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio de Contas drainage, Bahia State (Brazil). Habitat: freshwater.

tetuanensis, Trichomycterus García-Melo [L. J.], Villa-Navarro [F. A.] & DoNascimiento [C.] 2016:228, Figs. 1-6 [Zootaxa 4117 (no. 2); ref. 34471] Tolima, Ortega, río Tetuán, upper río Magdalena basin, Colombia, 3°51'23.866"N, 75°16'47.508"W, elevation 374 meters. Holotype: CZUT-IC 5151. Paratypes: CZUT-IC, IAvH-P. Type catalog: DoNascimiento et al. 2016:424 [ref. 34787]. •Valid as Trichomycterus tetuanensis García-Melo, Villa-Navarro & DoNascimiento 2016 -- (DoNascimiento et al. 2017:71 [ref. 35633]). Current status: Valid as Trichomycterus tetuanensis García-Melo, Villa-Navarro & DoNascimiento 2016. Trichomycteridae: Trichomycterinae. Distribution: Río Tetuán, upper Magdalena River basin, Colombia. Habitat: freshwater.

therma, Trichomycterus Fernández [L.] & Miranda [G.] 2007:1305, Figs. 1-5 [Journal of Fish Biology v. 71; ref. 29361] Near Baños Termales Miraflores [man-made thermal bath], 19°27'S, 65°47'W, Río Tarapaya drainage, Pilcomayo-Paraná basin, Dept. Potosí, Bolivia, elevation 3600 meters. Holotype: CBF 8886. Paratypes: CBF 9099 (3, 1 c&s) •Valid as Trichomycterus therma Fernández & Miranda 2007 -- (Fernández & Vari 2009:198 [ref. 30062], Sarmiento et al. 2014:193 [ref. 35004], García-Melo et al. 2016:238 [ref. 34471]). Current status: Valid as Trichomycterus therma Fernández & Miranda 2007. Trichomycteridae: Trichomycterinae. Distribution: Tarpaya River drainage, Bolivia. Habitat: freshwater.

tigrinus, Trichomycterus Philippi [R. A.] 1866:715 [Monatsberichte der Königlichen Preussischen Akademie der Wissenschaften zu Berlin 1866 (for 15 Nov. 1866); ref. 14056] Chile. No types known. Type catalog: Ferraris 2007:415 [ref. 29155]. •Synonym of Trichomycterus areolatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Ferraris 2007:415 [ref. 29155], Mirande & Koerber 2015:37 [ref. 35117]). Current status: Synonym of Trichomycterus areolatus Valenciennes 1846. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

tiraquae, Pygidium Fowler [H. W.] 1940:92, Fig. 52 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 92; ref. 1436] Tiraque, Cochabamba, Bolivia. Holotype: ANSP 69126 (with paratypes). Paratypes: ANSP 69127-29 and 69230-70 (45, in one jar). Type catalog: Böhlke 1984:163 [ref. 13621], Ferraris 2007:423 [ref. 29155]. •Synonym of Trichomycterus rivulatus Valenciennes 1846 -- (de Pinna & Wosiacki in Reis et al. 2003:284 [ref. 27061], Ferraris 2007:423 [ref. 29155]). •Valid as Trichomycterus tiraquae (Fowler 1940) -- (Fernández & Chuquihuamaní 2007:55 [ref. 29320], Fernández & Miranda 2007:1314 [ref. 29361], Fernández & Vari 2009:198 [ref. 30062], DoNascimiento et al. 2014:726 [ref. 33632], Sarmiento et al. 2014:193 [ref. 35004]). Current status: Valid as Trichomycterus tiraquae (Fowler 1940). Trichomycteridae: Trichomycterinae. Distribution: Bolivia. Habitat: freshwater.

tomarrazonensis, Trichomycterus Ardila Rodríguez [C. A.] 2025:10, Figs. 2A-B, 6B, 7B, 8B [Barranquilla, Departamento del Atlántico No. 104-109; ref. 42474] Vereda Los Gorros, corregimiento de Tomarrazón, municipio de Riohacha, Departamento de la Guajira, Colombia. Holotype: CAR 1050. Paratypes: CAR 1039 (8). •Valid as Trichomycterus tomarrazonensis Ardila Rodríguez 2025. Current status: Valid as Trichomycterus tomarrazonensis Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Vereda Los Gorros, Departamento de la Guajira, northern Colombia. Habitat: freshwater.

torcoromaensis, Trichomycterus Ardila Rodríguez [C. A.] 2016:4, Figs. 1, 2, 5A-B, 6, 7 [Barranquilla, Departamento del Atlántico No. 2; ref. 34399] Quebrada Torcoroma, parte alta, cuenca del río Magdalena, Municipio de Ocaña, Departamento de Norte de Santander, Colombia. Holotype: CAR 690. Paratypes: CAR; IAVHP; ICNMHN 19539 (3). Type catalog: DoNascimiento et al. 2016:424 [ref. 34787], Mojica & Agudelo-Zamora 2018:39 [ref. 36127]. •Valid as Trichomycterus torcoromaensis Ardila Rodríguez 2016 -- (Ardila Rodríguez 2016:15 [ref. 35108], Ardila Rodríguez 2017:11 [ref. 35579], DoNascimiento et al. 2017:71 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926], DoNascimiento & Prada-Pedreros 2020:12 [ref. 37386]). Current status: Valid as Trichomycterus torcoromaensis Ardila Rodríguez 2016. Trichomycteridae: Trichomycterinae. Distribution: Río Magdalena basin, Departamento de Norte de Santander, Colombia. Habitat: freshwater.

transandianum, Pygidium taenia var. Steindachner [F.] 1915:100 [86], Pl. 12 (fig. 6) [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Klasse. v. 93; ref. 4244] Río Combeima in Cañon del Gallo, mountains of central Colombia, elevation 1800 meters. Syntypes: (2) NMW 44475 (?). Type catalog: Ferraris 2007:424 [ref. 29155]. On p. 86 of separate; also in Steindachner 1917 [ref. 15259]. Species not listed in earlier abstract [ref. 18909]. •Synonym of Trichomycterus taenia Kner 1863, but a valid subspecies as described -- (Burgess 1989:323 [ref. 12860]). •Valid as Trichomycterus transandianus (Steindachner 1915) -- (de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061] as transandianum, Ferraris 2007:424 [ref. 29155], Castellanos-Morales 2008:312 [ref. 29836], Ardila Rodríguez 2011:11 [ref. 31409], Ardila Rodríguez 2011:21 [ref. 31410], Ardila Rodríguez 2014:11 [ref. 33769] as transandianum, Ardila Rodríguez 2016:12 [ref. 34399] as transandianum, Ardila Rodríguez 2016:16 [ref. 35108] as transandianum, Ardila Rodríguez 2017:11 [ref. 35579] as transandianum, DoNascimiento et al. 2017:71 [ref. 35633], Ardila Rodríguez 2018:10 [ref. 35926] as transandianum, Vilardo et al. 2023:4 [ref. 40643] as "Trichomycterus" transandianus). Current status: Valid as Trichomycterus transandianus (Steindachner 1915). Trichomycteridae: Trichomycterinae. Distribution: South America: Combeima River basin, central Andes (Colombia). Habitat: freshwater.

travassosi, Pygidium Miranda Ribeiro [P. de] 1949:145, Fig. 2 [Revista Brasileira de Biologia v. 9 (no. 2); ref. 13023] Rio das Pedras, Fazenda Penedo, Agulhas Negras, Estado do Rio de Janeiro, Brazil. Holotype (unique): MNRJ 5424. Type catalog: Miranda Ribeiro 1954:12 [ref. 21988], Ferraris 2007:414 [ref. 29155]. •Synonym of Trichomycterus alternatus (Eigenmann 1917) -- (de Pinna & Wosiacki in Reis et al. 2003:279 [ref. 27061], Ferraris 2007:414 [ref. 29155], Barbosa & Costa 2008:184 [ref. 29961], Barbosa & Costa 2010:121 [ref. 30782], Barbosa & Costa 2011:308 [ref. 31672], Barbosa & Costa 2012:79 [ref. 31901], Reis & de Pinna 2022:15 [ref. 39360]). •Valid as Trichomycterus travassosi (Miranda Ribeiro 1949) -- (Bizerril 1994:623 [ref. 22673], Bockmann et al. 2004:227 [ref. 27855], Costa 2021:176 [ref. 38391], Costa et al. 2022:513 [ref. 39820] in subgenus Psammocambeva, Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus travassosi (Miranda Ribeiro 1949). Trichomycteridae: Trichomycterinae. Distribution: South America: Rio das Pedras drainage, Paraíba do Sul basin, Rio de Janeiro State (Brazil). IUCN (2025): Not Assessed. Habitat: freshwater.

trefauti, Trichomycterus Wosiacki [W. B.] 2004:3, Fig. 2 [Zootaxa No. 592; ref. 27845] Riacho Andrequicé, tributary of rio Paraúna, itself a tributary of rio das Velhas (rio São Francisco basin), about 18°30'S, 43°30'W, Município de Trinta Réis, Minas Gerais State, Brazil. Holotype: MZUSP 79911. Paratypes: MZUSP 36966 (5, 3 c&s), MPEG 7896 (2). Type catalog: Ferraris 2007:425 [ref. 29155]. •Valid as Trichomycterus trefauti Wosiacki 2004 -- (Ferraris 2007:425 [ref. 29155], dos Reis et al. 2020:7 [ref. 37862]). Current status: Valid as Trichomycterus trefauti Wosiacki 2004. Trichomycteridae: Trichomycterinae. Distribution: Riacho Andrequicé, upper São Francisco River basin, Minas Gerais State, Brazil. Habitat: freshwater.

tristis, Trichomycterus brasiliensis var. Lütken [C. F.] 1875:137 [17] [Det Kongelige Danske Videnskabernes Selskabs Skrifter. Naturvidenskabelig og Mathematisk Afdeling (Ser. 5) v. 12 (no. 2); ref. 19674] Rio das Velhas, Minas Gerais State, Brazil. Holotype: ZMUC P30167 [ex 122]. Type catalog: Nielsen 1974:52 [ref. 9588], Ferraris 2007:416 [ref. 29155]. On p. 17 of separate. •Synonym of Trichomycterus brasiliensis Lütken 1874 -- (de Pinna & Wosiacki in Reis et al. 2003:280 [ref. 27061], Ferraris 2007:416 [ref. 29155]). Current status: Synonym of Trichomycterus brasiliensis Lütken 1874. Trichomycteridae: Trichomycterinae. Habitat: freshwater.

uberabensis, Trichomycterus (Cryptocambeva) Costa [W. J. E. M.], Azevedo-Santos [V. M.] & Katz [A. M.] in Costa, Azevedo-Santos, Mattos & Katz 2023:21, Figs. 5D, 6F, 7D, 12 [Fishes v. 8 (no. 4): 206; ref. 40170] Stream tributary of Rio Uberaba, Rio Grande drainage, upper Rio Paraná basin, Veríssimo municipality, Minas Gerais State, Brazil, 19°39'21"S, 48°15'21"W, elevation about 665 meters. Holotype: UFRJ 13366. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus uberabensis Costa, Azevedo-Santos & Katz 2023 Current status: Valid as Trichomycterus uberabensis Costa, Azevedo-Santos & Katz 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Uberaba subdrainage, middle Rio Grande drainage, upper Paraná River basin, Minas Gerais State, Brazil. Habitat: freshwater.

uisae, Trichomycterus Castellanos-Morales [C. A.] 2008:308, Figs. 2-8 [Neotropical Ichthyology v. 6 (no. 3); ref. 29836] Municipio de Los Santos, Verde Mesa de Los Santos, Acuarela road 3.5 km, Cueva El Misterio, 6°50'21"N, 73°05'18"W, upper Sogamosa River basin, Departamento de Santander, Colombia, subterranean waters, elevation 1600 meters. Holotype: CAC-CDMB. Paratypes: ANSP 187498 (1); CAC-CDMB 88 (1); IAvH-P 10806 (2); UIS-T 1698 (1), 1699 (1). Plus non-type material. Type catalog: DoNascimiento et al. 2016:424 [ref. 34787]. •Valid as Trichomycterus uisae Castellanos-Morales 2008 -- (Castellanos-Morales 2011:34 [ref. 31477], Rizzato et al. 2011:478 [ref. 31516], Bichuette & Rizzato 2012:49 [ref. 32163], García-Melo et al. 2016:238 [ref. 34471], DoNascimiento et al. 2017:71 [ref. 35633], Castellanos-Morales 2018:127 [ref. 35988], Ardila Rodríguez 2023:4 [ref. 40606], Ardila Rodríguez 2023:7 [ref. 40609]). Current status: Valid as Trichomycterus uisae Castellanos-Morales 2008. Trichomycteridae: Trichomycterinae. Distribution: South America: El Misterio Cave, upper Sogamosa River basin, Santander, Colombia. Habitat: freshwater.

unicolor, Pygidium Regan [C. T.] 1913:468 [Annals and Magazine of Natural History (Series 8) v. 12 (no. 71); ref. 3656] Río Condoto, Colombia. Syntypes: BMNH 1913.10.1.42-43 (2). Type catalog: Ferraris 2007:425 [ref. 29155]. •Valid as Trichomycterus unicolor (Regan 1913) -- (Burgess 1989:323 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Fernández & Schaefer 2005:73 [ref. 28090], Ferraris 2007:425 [ref. 29155], DoNascimiento et al. 2017:71 [ref. 35633]). Current status: Valid as Trichomycterus unicolor (Regan 1913). Trichomycteridae: Trichomycterinae. Distribution: San Juan River basin, Colombia. Habitat: freshwater.

urbanoi, Trichomycterus Ardila Rodríguez [C. A.] 2025:16, Figs. 3D-E, 6F, 9C [Barranquilla, Departamento del Atlántico No. 104-109; ref. 42474] Quebrada Goyeneche, río Tota, Vereda la Vega. Cuenca del río Chicamocha, municipio de Cuitiva, Departamento de Boyacá, Colombia, elevation 2,550 meters. Holotype: CAR 1040 [ex MPUJ 3012]. Paratypes: CAR 473 (8, ex MPUJ 3012), MPUJ 3012 (62). •Valid as Trichomycterus urbanoi Ardila Rodríguez 2025. Current status: Valid as Trichomycterus urbanoi Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Chicamocha drainage, Departamento de Boyacá, Colombia. Habitat: freshwater.

valenciae, Trichomycterus Ardila Rodríguez [C. A.] 2025:14, Figs. 3B-C, 5C, 6E, 9B [Barranquilla, Departamento del Atlántico No. 104-109; ref. 42474] Quebrada Corozal, Vereda la Inquisición, municipio de Palestina, Departamento de Caldas, Colombia. Holotype: CAR 1023. Paratypes: CAR 1011 (2), CAR 1051 (2). •Valid as Trichomycterus valenciae Ardila Rodríguez 2025. Current status: Valid as Trichomycterus valenciae Ardila Rodríguez 2025. Trichomycteridae: Trichomycterinae. Distribution: South America: Río Cauca drainage, Departamento de Caldas, Colombia. Habitat: freshwater.

valleduparensis, Trichomycterus Ardila Rodríguez [C. A.] 2018:12, Fig. 4 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Río Guatapurí, sector Sabana Crespo, municipio de Valledupar, Departamento del Cesar, Colombia. Holotype: CAR 802. Paratypes: CAR, IAvH-P. Also written as velleduparensis. •Valid as Trichomycterus valleduparensis Ardila Rodríguez 2018 -- (DoNascimiento & Prada-Pedreros 2020:13 [ref. 37386]). Current status: Valid as Trichomycterus valleduparensis Ardila Rodríguez 2018. Trichomycteridae: Trichomycterinae. Distribution: Río Guatapurí drainage, Departamento del Cesar, Colombia. Habitat: freshwater.

varii, Trichomycterus Fernández [L.] & Andreoli Bize [J.] 2018:360, Figs. 1, 2A, 3A [Zootaxa 4504 (no. 3); ref. 36232] Cieneguillas River, Santa Catalina Department, Jujuy Province, Argentina, 22°07'S, 65°45'W, elevation 3,567 meters. Holotype: FACEN 0105. Paratypes: FACEN. •Valid as Trichomycterus varii Fernández & Andreoli Bize 2018 -- (Koerber et al. 2019:7 [ref. 36736], Mirande & Koerber 2020:2 [ref. 37594]). Current status: Valid as Trichomycterus varii Fernández & Andreoli Bize 2018. Trichomycteridae: Trichomycterinae. Distribution: South America: Cieneguillas River drainage, High Andean Plateau, Jujuy Province (Argentina). Habitat: freshwater.

vermiculatum, Pygidium Eigenmann [C. H.] 1917:699 [Proceedings of the American Philosophical Society v. 56; ref. 1237] Juiz de Fora, Rio Parahyba, Brazil. Holotype (unique): FMNH 58077 [ex CM 7074]. Type catalog: Henn 1928:81 [ref. 12305], Ibarra & Stewart 1987:73 [ref. 12367], Ferraris 2007:425 [ref. 29155] Date may be 1918 (research needed). •Valid as Trichomycterus vermiculatus (Eigenmann 1917) -- (Burgess 1989:323 [ref. 12860] as vermiculatum, Bizerril 1994:623 [ref. 22673], de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Barbosa & Costa 2003:282 [ref. 27395], Barbosa & Costa 2003:179 [ref. 27636] dated 1918, Bockmann et al. 2004:227 [ref. 27855], Ferraris 2007:425 [ref. 29155], Barbosa & Costa 2010:121 [ref. 30782], Barbosa & Katz 2016:262 [ref. 34950]). Current status: Valid as Trichomycterus vermiculatus (Eigenmann 1917). Trichomycteridae: Trichomycterinae. Distribution: Paraíba do Sul River basin, Minas Gerais State, Brazil. Habitat: freshwater.

vinnulus, Trichomycterus Reis [V. J. C.] & de Pinna [M. C. C.] 2022:81, Figs. 10, 37 [Zoological Journal of the Linnean Society v. 197 (no. 2); ref. 39360] Córrego dos Borges Creek running into left margin of the reservoir and the Rio do Peixe River, Risoleta Neves Hydroelectric Dam, Rio Doce Municipality, Minas Gerais, Brazil, 20°12'21.63"S, 42°52'56.24"W. Holotype: MZUSP 123750. Paratypes: MZUSP 123757 (7), 126760 (43). •Valid as Trichomycterus vinnulus Reis & de Pinna 2022 -- (Costa et al. 2023:12 [ref. 40511], Vilardo et al. 2023:5 [ref. 40643], Vieira-Guimarães et al. 2024:51 [ref. 41258]). Current status: Valid as Trichomycterus vinnulus Reis & de Pinna 2022. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Doce drainage, Minas Gerais (Brazil). Habitat: freshwater.

vitalbrazili, Trichomycterus Vilardo [P. J.], Katz [A. M.] & Costa [W. J. E. M.] 2020:3, Figs. 2-4, 6 [Zoological Studies v. 59: 53; ref. 37847] Mountain stream tributary to the Rio Grande drainage, Rio Paraíba do Sul basin, Serra dos Órgãos, inside the campus of the Instituto Vital Brazil, Nova Friburgo Municipality, Rio de Janeiro, Brazil, 22°20'51"S, 42°37'18"W, elevation about 1,130 meters. Holotype: UFRJ 12151. Paratypes: CICCAA, UFRJ. •Valid as Trichomycterus vitalbrazili Vilardo, Katz & Costa 2020 -- (Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus vitalbrazili Vilardo, Katz & Costa 2020. Trichomycteridae: Trichomycterinae. Distribution: South America: upper Rio Grande drainage, Paraíba do Sul River basin, Rio de Janeiro State (Brazil). IUCN (2025): Not Assessed. Habitat: freshwater.

vittatus, Trichomycterus Regan [C. T.] 1903:623 [Annals and Magazine of Natural History (Series 7) v. 12 (no. 72) (art. 64); ref. 13401] Marcapata Valley, eastern Peru. Holotype (unique): BMNH 1902.5.29.210. Type catalog: Ferraris 2007:425 [ref. 29155]. •Valid as Trichomycterus vittatus Regan 1903 -- (Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:323 [ref. 12860] as vittatum, de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:425 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:193 [ref. 35004]). Current status: Valid as Trichomycterus vittatus Regan 1903. Trichomycteridae: Trichomycterinae. Distribution: Peru, Ecuador and Bolivia. Habitat: freshwater.

weyrauchi, Pygidium Fowler [H. W.] 1945:7, Figs. 10-12 [Notulae Naturae (Philadelphia) No. 159; ref. 13141] Acobamba, near Tarma, Río Ucayali drainage, Peru, elevation 2900 meters. Holotype: ANSP 71639 (with paratypes). Paratypes: ANSP 71640-42 (3). Type catalog: Böhlke 1984:163 [ref. 13621], Ferraris 2007:425 [ref. 29155]. •Valid as Trichomycterus weyrauchi (Fowler 1945) -- (Ortega & Vari 1986:16 [ref. 9708], de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], Fernández & Chuquihuamaní 2007:55 [ref. 29320], Ferraris 2007:425 [ref. 29155], García-Melo et al. 2016:238 [ref. 34471], Chuctaya et al. 2022:49 [ref. 42137]). Current status: Valid as Trichomycterus weyrauchi (Fowler 1945). Trichomycteridae: Trichomycterinae. Distribution: South America: Ucayali River basin (Peru) endemic. Habitat: freshwater.

wiwa, Trichomycterus Ardila Rodríguez [C. A.] 2018:7, Fig. 1 [Barranquilla, Departamento del Atlántico No. 12; ref. 36278] Río Marocaso, afluente del río Ranchería parte alta, Corregimiento de Marocaso, municipio de San Juan del Cesar, Departamento de la Guajira, Colombia, elevation 450 meters. Holotype: CAR 793. Paratypes: CAR, ICNMHN. •Valid as Trichomycterus wiwa Ardila Rodríguez 2018. Current status: Valid as Trichomycterus wiwa Ardila Rodríguez 2018. Trichomycteridae: Trichomycterinae. Distribution: Río Marocaso drainage, Departamento de la Guajira, Colombia. Habitat: freshwater.

yuska, Trichomycterus Fernández [L.] & Schaefer [S. A.] 2003:355, Fig. 1 [Ichthyological Exploration of Freshwaters v. 14 (no. 4); ref. 27407] Arroyo Aguas Calientes, 27°14'S, 68°16'W, Departamento Tinogasta, Province de Catamarca, Argentina, elevation 4050 meters. Holotype: FML 2535. Paratypes: AMNH 232397 (1); FML 1130 (2), 1131 (1), 1132 (12, 2 c&s), 1133 (5). Type catalog: Ferraris 2007:425 [ref. 29155]. •Valid as Trichomycterus yuska Fernández & Schaefer 2003 -- (Fernández & Vari 2004:880 [ref. 28047], Ferraris 2007:425 [ref. 29155], Koerber 2011:4 [ref. 31122], Koerber 2014:8 [ref. 33621], Mirande & Koerber 2015:38 [ref. 35117], García-Melo et al. 2016:237 [ref. 34471], Fernández & Andreoli Bize 2018:366 [ref. 36232]). Current status: Valid as Trichomycterus yuska Fernández & Schaefer 2003. Trichomycteridae: Trichomycterinae. Distribution: Arroyo Aguas Calientes, Catamarca Province, western Argentina. Habitat: freshwater.

zapatocaensis, Trichomycterus Ardila Rodríguez [C. A.] 2023:5, Figs. 1, 3A-B, 4A, 5-7 [Barranquilla, Departamento del Atlántico No. 91; ref. 40606] Cueva del Nitro, Municipio de Zapatoca, Departamento de Santander, Colombia, elevation 1720 meters. Holotype: CAR 1001. Paratypes: CAR 930 (6), UIS-T 0363 (1), 2158 (9), 2159 (3). •Valid as Trichomycterus zapatocaensis Ardila Rodríguez 2023. Current status: Valid as Trichomycterus zapatocaensis Ardila Rodríguez 2023. Trichomycteridae: Trichomycterinae. Distribution: South America: Cueva del Nitro, Municipio de Zapatoca, Departamento de Santander, Colombia. Habitat: freshwater.