nudiventris, Loricaria Valenciennes [A.] in Cuvier & Valenciennes 1840:469 [Histoire naturelle des poissons v. 15; ref. 1008] Rio São Francisco, Brazil. Holotype (unique): MNHN A-9558 (poor condition). Type catalog: Bertin & Estève 1950:74 [ref. 19575], Ferraris 2007:297 [ref. 29155] •Valid as Spatuloricaria nudiventris (Valenciennes 1840) -- (Isbrücker 1980:113 [ref. 2303], Isbrücker 1981:88 [ref. 5522], Burgess 1989:443 [ref. 12860], Isbrücker 2001:29, 32 [ref. 25653], Isbrücker 2002:29 [ref. 27178], Ferraris in Reis et al. 2003:345 [ref. 27061], López et al. 2003:49 [ref. 27366], Menni 2004:81 [ref. 28131], Ferraris 2007:297 [ref. 29155], Fichberg et al. 2014:323 [ref. 33358], Litz & Koerber 2014:27 [ref. 33622], Nión et al. 2016:32 [ref. 35565]). Current status: Valid as Spatuloricaria nudiventris (Valenciennes 1840). Loricariidae: Loricariinae. Distribution: South America: La Plata River and São Francisco River basin (Argentina, Brazil). Habitat: freshwater.