amazonicus, Trichomycterus Steindachner [F.] 1882:178 [Anzeiger der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftlichen Klasse v. 19 (no. 19); ref. 20487] Cudajas, Brazil. Holotype (unique): NMW 43306. Type catalog: Ferraris 2007:406 [ref. 29155]. Species later illustrated and described in more detail in Steindachner 1882:29, Pl. 6 (figs. 4-4a) [ref. 14353]. •Valid as Trichomycterus amazonicum Steindachner 1882 -- (Burgess 1989:321 [ref. 12860], Britski et al. 1999:92 [ref. 24147]). •Valid as Ituglanis amazonicus (Steindachner 1882) -- (Costa & Bockmann 1993:43 [ref. 21010], Chang & Ortega 1995:4 [ref. 24302], Burgess & Finley 1996:168 [ref. 22901], Le Bail et al. 2000:166 [ref. 24549], Fernández & Bichuette 2002:277 [ref. 26539], de Pinna & Wosiacki in Reis et al. 2003:274 [ref. 27061], de Pinna & Keith 2003:873 [ref. 27831], Datovo & Landim 2005:461 [ref. 28558], Sarmento-Soares et al. 2006:310 [ref. 28814], Campos-Paiva & Costa 2007:58 [ref. 29139], Ferraris 2007:406 [ref. 29155], Wosiacki et al. 2012:551 [ref. 32291], Lima et al. 2013:522 [ref. 32912], Barriga Salazar 2014:110 [ref. 35745], Datovo 2014:467 [ref. 33282], Sarmiento et al. 2014:192 [ref. 35004], Rizzato & Bichuette 2015:598 [ref. 33676], Datovo et al. 2016:454 [ref. 34783], Castro & Wosiacki 2017:215 [ref. 35201], see DoNascimiento et al. 2017:[15] [ref. 35679], Mendonça et al. 2018:484 [ref. 36234], Meza-Vargas et al. 2021:24 [ref. 39298], Borstein et al. 2022:18 [ref. 39507], Koerber et al. 2022:45 [ref. 39235], Vieira et al. 2023:21 [ref. 40759] as cf. amazonicus). Current status: Valid as Ituglanis amazonicus (Steindachner 1882). Trichomycteridae: Trichomycterinae. Distribution: South America: Amazon River basin and rivers of French Guiana (Brazil, Ecuador, Bolivia, French Guiana, Peru and Suriname). Habitat: freshwater.