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.