barbatus, Hypostomus Valenciennes [A.] in Cuvier & Valenciennes 1840:506 [Histoire naturelle des poissons v. 15; ref. 1008] La Mana River, French Guiana. Holotype (unique): MNHN A-9564. Type catalog: Bertin & Estève 1950:72 [ref. 19575], Ferraris 2007:287 [ref. 29155]. •Valid as Pseudancistrus barbatus (Valenciennes 1840) -- (Isbrücker 1980:10 [ref. 2303], Burgess 1989:429 [ref. 12860], Le Bail et al. 2000:252 [ref. 24549], Isbrücker 2001:28, 31 [ref. 25653], Isbrücker 2002:27 [ref. 27178], Fisch-Muller in Reis et al. 2003:394 [ref. 27061], Armbruster 2004:5 [ref. 27844], Ferraris 2007:287 [ref. 29155], De Chambrier & Montoya-Burgos 2008:52 [ref. 29881], Silva et al. 2014:2 [ref. 33302], Silva et al. 2015:21 [ref. 33679], Borstein et al. 2022:18 [ref. 39507]). Current status: Valid as Pseudancistrus barbatus (Valenciennes 1840). Loricariidae: Hypostominae. Distribution: South America: Oyapock, Mana, Maroni, Suriname, Corantijn and Essequibo River basins (French Guiana, Guyana and Suriname). Habitat: freshwater.