alatus, Hypostomus Castelnau [F. L.] 1855:41, Pl. 20 (fig. 1) [Animaux nouveaux or rares v. 2; ref. 766] Rio Sabara, Minas Gerais State, Brazil. Holotype (unique): MNHN A-9441 (mounted). Type catalog: Bertin & Estève 1950:71 [ref. 19575], Ferraris 2007:251 [ref. 29155]. •Valid as Hypostomus alatus Castelnau 1855 -- (Isbrücker 1980:18 [ref. 2303], Ortega & Vari 1986:17 [ref. 9708], Burgess 1989:430 [ref. 12860], López & Miquelarena 1991:15 [ref. 23548], Gómez & Chebez 1996:63 [ref. 23791], Isbrücker 2001:28 [ref. 25653], Britski 2001:19 [ref. 26046], Isbrücker 2002:18 [ref. 27178], Weber in Reis et al. 2003:355 [ref. 27061], López et al. 2003:49 [ref. 27366], Armbruster 2004:79 [ref. 27644], Menni 2004:81 [ref. 28131], Ferraris 2007:251 [ref. 29155], Zawadzki et al. 2012:246 [ref. 32031], Zanata et al. 2013:248 [ref. 32751], Litz & Koerber 2014:25 [ref. 33622], Mirande & Koerber 2015:42 [ref. 35117], Zanata & Pitanga 2016:231 [ref. 34535], Nión et al. 2016:32 [ref. 35565], Zawadzki et al. 2017:12 [ref. 35355], Ramos et al. 2017:8 [ref. 35396], Zawadzki et al. 2017:570 [ref. 35666], Azevedo et al. 2021:7 [ref. 38203]). Current status: Valid as Hypostomus alatus Castelnau 1855. Loricariidae: Hypostominae. Distribution: South America: Uruguay River and upper São Francisco River basin (Argentina, Brazil and Uruguay). Habitat: freshwater.