seminudus, Plecostomus Eigenmann [C. H.] & Eigenmann [R. S.] 1888:169 [Proceedings of the California Academy of Sciences (Series 2) v. 1 (pt 2); ref. 1249] Brazil. Holotype (unique): MCZ 28981. Type catalog: Ferraris 2007:260 [ref. 29155]. Available from description provided in key on p. 169. •Valid as Hypostomus seminudus (Eigenmann & Eigenmann 1888) -- (Isbrücker 1980:34 [ref. 2303], Burgess 1989:432 [ref. 12860], Isbrücker 2001:28, 31 [ref. 25653], Isbrücker 2002:19 [ref. 27178], Weber in Reis et al. 2003:362 [ref. 27061], Armbruster 2004:80 [ref. 27644], Ferraris 2007:260 [ref. 29155]). Current status: Valid as Hypostomus seminudus (Eigenmann & Eigenmann 1888). Loricariidae: Hypostominae. Distribution: Brazil. Habitat: freshwater.