Species that contain: Auchenipterus and nuchalis [ 5 ] records

ambyiacus, Auchenipterus Fowler [H. W.] 1915:222, Fig. 6 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 67; ref. 1392] Ambyiacu [Ampiyacu] River, Ecuador [now Peru]. Holotype (unique): ANSP 21484. Type catalog: Böhlke 1984:24 [ref. 13621], Ferraris 2007:71 [ref. 29155]. •Synonym of Auchenipterus nuchalis (Spix & Agassiz 1829) -- (Burgess 1989:241 [ref. 12860]). •Valid as Auchenipterus ambyiacus Fowler 1915 -- (Ferraris & Vari 1999:400 [ref. 23953], Ferraris in Reis et al. 2003:473 [ref. 27061], Ferraris 2007:71 [ref. 29155], Barriga Salazar 2014:115 [ref. 35745], Sarmiento et al. 2014:143, 189 [ref. 35004], DoNascimiento et al. 2017:86 [ref. 35633], Calegari et al. 2019:[96] [ref. 36961], Meza-Vargas et al. 2021:22 [ref. 39298]). Current status: Valid as Auchenipterus ambyiacus Fowler 1915. Auchenipteridae: Auchenipterinae. Distribution: South America: upper and middle Amazon and Orinoco River basins and coastal rivers of Guyana (Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru and Venezuela). Habitat: freshwater.

brevior, Auchenipterus Eigenmann [C. H.] 1912:202 [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Tumatumari, Guyana. Holotype: FMNH 53249 [ex CM 1715]. Paratypes: (20) BMNH 1911.10.31.97-98 (2); CAS 52135 [IU 12092 & 12108] (5); CAS-SU 21934 (1, missing in 1995); FMNH 7403 (1), 53250 (3), 69686 (2); MCZ 30190 [ex CM 1716b] (1),;NMW 47389 (1); USNM 66102 [ex CM] (1); ZMA 104668 (1). Type catalog: Henn 1928:73 [ref. 12305], Böhlke 1953:42 [ref. 12291], Nijssen et al. 1982:39 [ref. 19236], Ibarra & Stewart 1987:14 [ref. 12367], Ferraris & Vari 1992:11 [ref. 19771], Ferraris 2007:72 [ref. 29155]. •Synonym of Auchenipterus nuchalis (Spix & Agassiz 1829) -- (Burgess 1989:241 [ref. 12860]). •Valid as Auchenipterus brevior Eigenmann 1912 -- (Ferraris & Vari 1999:400 [ref. 23953], Ferraris in Reis et al. 2003:473 [ref. 27061], Ferraris 2007:72 [ref. 29155], Calegari et al. 2019:[96] [ref. 36961]). Current status: Valid as Auchenipterus brevior Eigenmann 1912. Auchenipteridae: Auchenipterinae. Distribution: Potaro River basin, Guyana. Habitat: freshwater.

dentatus, Auchenipterus Valenciennes [A.] in Cuvier & Valenciennes 1840:210 [Histoire naturelle des poissons v. 15; ref. 1008] Near Paramaribo, Suriname. Holotype (unique): MNHN B-0592 [ex RMNH]. Type catalog: Bertin & Estève 1950:16 [ref. 19575], Royero & Hureau 1996:370 [ref. 22752], Ferraris 2007:72 [ref. 29155]. For information on type and locality see Boeseman 1972:295 [ref. 19698] and Ferraris & Vari 1999:423 [ref. 23953]. •Synonym of Auchenipterus nuchalis (Spix & Agassiz 1829) -- (authors). •Valid as Auchenipterus dentatus Valenciennes 1840 -- (Ferraris & Vari 1999:419 [ref. 23953], Le Bail et al. 2000:60 [ref. 24549], Diogo et al. 2003:398 [ref. 27439], Ferraris 2007:72 [ref. 29155], Calegari et al. 2019:[96] [ref. 36961]). Current status: Valid as Auchenipterus dentatus Valenciennes 1840. Auchenipteridae: Auchenipterinae. Distribution: Northern coastal rivers of the Guianas; Corantijn, Suriname, Arataye, Sinnamary and Oyapock rivers: French Guiana and Suriname. Habitat: freshwater.

nuchalis, Hypophthalmus Spix [J. B. von] & Agassiz [L.] 1829:17, Pl. 17 [Selecta genera et species piscium quos in itinere per Brasiliam; ref. 13] Rio Capim, near São Domingos do Capim, at Igarapé Pirajauara, about 1°41'S, 47°47'W, Pará, Brazil [lower Amazon basin]. Neotype: MZUSP 47945. Type catalog: Ferraris 2007:72 [ref. 29155]. Name first published in Cuvier 1829 [ref. 995]. •Valid as Auchenipterus nuchalis (Spix & Agassiz 1829) -- (Ortega & Vari 1986:13 [ref. 9708], Mees 1986:312 [ref. 5693], Burgess 1989:241 [ref. 12860], Gómez & Chebez 1996:58 [ref. 23791], Sverlij et al. 1998:46 [ref. 27632], Ferraris & Vari 1999:434 [ref. 23953], Britski et al. 1999:114 [ref. 24147], Le Bail et al. 2000:60 [ref. 24549], Ferraris in Reis et al. 2003:473 [ref. 27061], Ferraris 2007:72 [ref. 29155], Barriga Salazar 2014:115 [ref. 35745], Birindelli 2014:535 [ref. 33501], Sarmiento et al. 2014:143, 189 [ref. 35004], DoNascimiento et al. 2017:86 [ref. 35633], Calegari et al. 2019:[96] [ref. 36961], Silvano et al. 2020:212 [ref. 38135], Meza-Vargas et al. 2021:22 [ref. 39298], Koerber et al. 2022:56 [ref. 39235]). Current status: Valid as Auchenipterus nuchalis (Spix & Agassiz 1829). Auchenipteridae: Auchenipterinae. Distribution: South America: Amazon and Orinoco River basins (Guyana, Brazil, Ecuador, Colombia, Bolivia, Peru and French Guiana). Habitat: freshwater.

osteomystax, Ceratocheilus Miranda Ribeiro [A. de] 1918:644 [16], Pl. [Revista do Museu Paulista v. 10; ref. 3725] Rio Vermelho, Santa Rita das Anitas, Goiás State, Brazil. Holotype (unique): MZUSP [ex DZSASP] 2317. Type catalog: Britski 1969:205 [ref. 12401], Ferraris 2007:72 [ref. 29155]. On p. 16 of separate. •Synonym of Auchenipterus nuchalis (Spix & Agassiz 1829) -- (Burgess 1989:241 [ref. 12860]). •Valid as Auchenipterus osteomystax (Miranda Ribeiro 1918) -- (Ferraris & Vari 1999:439 [ref. 23953], Ferraris in Reis et al. 2003:474 [ref. 27061], López et al. 2003:55 [ref. 27366], Menni 2004:83 [ref. 28131], Ferraris 2007:72 [ref. 29155], Litz & Koerber 2014:18 [ref. 33622], Sarmiento et al. 2014:143, 189 [ref. 35004], Mirande & Koerber 2015:30 [ref. 35117], Bertaco et al. 2016:416 [ref. 34561], Koerber et al. 2017:46 [ref. 35267], Calegari et al. 2019:[96] [ref. 36961], Reis et al. 2020:464 [ref. 38364], Loureiro et al. 2023:124 [ref. 40506]). Current status: Valid as Auchenipterus osteomystax (Miranda Ribeiro 1918). Auchenipteridae: Auchenipterinae. Distribution: South America: La Plata River basin, Tocantins River, and several rivers in lower Amazon River basin (Argentina, Brazil, Bolivia, Paraguay and Uruguay). Habitat: freshwater.