Species that contain: Pseudancistrus and barbatus [ 3 ] records

barbatus, Ancistrus Steindachner [F.] 1911:376 [Anzeiger der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftlichen Klasse v. 48 (no. 17) (for 6 July 1911); ref. 14817] Rio Tapajós at Vila Braga, Brazil. Appeared as "Ancistrus barbatus (C.V.) Reg." Apparently not the same as Hypostomus barbatus Valenciennes 1840. Name proposed invertently by Isbrücker 1980 according to Fisch-Muller in Reis et al. 2003:394 [ref. 27061]. •Valid as Pterygoplichthys barbatus (Steindachner 1911) -- (Isbrücker 1980:40 [ref. 2303], Burgess 1989:433 [ref. 12860]). •In the synonymy of Pseudancistrus barbatus (Valenciennes 1840) -- (Fisch-Muller in Reis et al. 2003:394 [ref. 27061]). Current status: Synonym of Pseudancistrus barbatus (Valenciennes 1840). Loricariidae: Hypostominae. Habitat: freshwater.

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.

guttatus, Hypostomus Valenciennes [A.] in Cuvier & Valenciennes 1840:508 [Histoire naturelle des poissons v. 15; ref. 1008] Region near Paramaribo, Suriname. Holotype (unique): RMNH 3126. Type catalog: Ferraris 2007:287 [ref. 29155]. For information on type and locality see Boeseman 1972:305 [ref. 19698], also Isbrücker 1980:10 [ref. 2303]. •Synonym of Pseudancistrus barbatus (Valenciennes 1840) -- (Isbrücker 1980:10 [ref. 2303], Isbrücker 2001:28 [ref. 25653], Isbrücker 2002:18 [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 2008:46 [ref. 29881]). Current status: Synonym of Pseudancistrus barbatus (Valenciennes 1840). Loricariidae: Hypostominae. Habitat: freshwater.