lexi, Plecostomus Ihering [R. von] 1911:387 [Revista do Museo Paulista, São Paulo v. 8 (1910); ref. 14822] Rio Pardo, near to Barretos, São Paulo State, Brazil. Holotype (unique): MZUSP [ex DZSASP] 2126. Type catalog: Britski 1969:209 [ref. 12401], Ferraris 2007:255 [ref. 29155]. •Valid as Hypostomus lexi (Ihering 1911) -- (Isbrücker 1980:26 [ref. 2303], Burgess 1989:431 [ref. 12860], Isbrücker 2001:28, 31 [ref. 25653], Isbrücker 2002:19 [ref. 27178], Weber in Reis et al. 2003:359 [ref. 27061], Armbruster 2004:79 [ref. 27644], Ferraris 2007:255 [ref. 29155]). •Synonym of Hypostomus albopunctatus (Regan 1908) -- (Zawadzki et al. 2019:[3] [ref. 37170]). Current status: Synonym of Hypostomus albopunctatus (Regan 1908). Loricariidae: Hypostominae. Habitat: freshwater.