ancistroides, Plecostomus Ihering [R. von] 1911:396 [Revista do Museo Paulista, São Paulo v. 8 (1910); ref. 14822] Rio Tatuhy and Rio Piracicaba, São Paulo State, Brazil. Syntypes: DZSASP [now MZUSP] (not found). Type catalog: Britski 1969:200 [ref. 12401], Ferraris 2007:251 [ref. 29155]. •Valid as Hypostomus ancistroides (Ihering 1911) -- (Isbrücker 1980:19 [ref. 2303], Burgess 1989:430 [ref. 12860], Castro & Casatti 1997:342 [ref. 23333], Isbrücker 2001:28, 31 [ref. 25653], Casatti et al. 2001:5 [ref. 25929], Isbrücker 2002:18 [ref. 27178], Weber in Reis et al. 2003:355 [ref. 27061], Armbruster 2004:79 [ref. 27644], Oyakawa et al. 2005:10 [ref. 28322], Ferraris 2007:251 [ref. 29155], Zawadzki et al. 2010:724 [ref. 31074], Cardoso et al. 2012:77 [ref. 32154], Rosa et al. 2014:59 [ref. 33228], Zawadzki et al. 2014:102 [ref. 33233], Martins et al. 2014:7 [ref. 33617], Cardoso et al. 2016:20 [ref. 34373], Zawadzki et al. 2016:271 [ref. 34908], Zawadzki et al. 2017:570 [ref. 35666], Zawadzki et al. 2018:[16] [ref. 35944], Azevedo-Santos et al. 2019:5 [ref. 36506], Zawadzki et al. 2019:[11] [ref. 37170], Azevedo-Santos et al. 2020:5 [ref. 39606], Reis et al. 2020:467 [ref. 38364], Brandão et al. 2022:169 [ref. 40464]). Current status: Valid as Hypostomus ancistroides (Ihering 1911). Loricariidae: Hypostominae. Distribution: South America: upper Paraná River basin, Tietê River basin, and Ribeira de Iguapé River basin (Brazil). Habitat: freshwater.