macropterus, Corydoras Regan [C. T.] 1913:232 [Annals and Magazine of Natural History (Series 8) v. 11 (no. 62); ref. 14976] Paranaguá, 25°32'S, 48°36'W, Paraná, Brazil. Lectotype: BMNH 1913.1.1.11. Paralectotypes: BMNH 1913.1.1.12-13 (2), ZMA 109953 [ex BMNH 1913.1.1.14] (1). Type catalog: Nijssen et al. 1982:46 [ref. 19236], Ferraris 2007:130 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:206 [ref. 6910]. For information on type locality see Buckup & Malabarba 1990 [ref. 16740]. •Valid as Corydoras macropterus Regan 1913 -- (Nijssen & Isbrücker 1980:206 [ref. 6910], Burgess 1989:366 [ref. 12860], Britski et al. 1999:126 [ref. 24147], Isbrücker 2001:229 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061]). •Valid as Scleromystax macropterus (Regan 1913) -- (Britto 2003:147 [ref. 27338], Britto & Reis 2005:481 [ref. 28458], Knaack 2007:36 [ref. 29221], Ferraris 2007:130 [ref. 29155], Litz & Koerber 2014:24 [ref. 33622], Ottoni et al. 2016:133 [ref. 34756], Britto et al. 2016:[9] [ref. 34806], Koerber et al. 2017:58 [ref. 35267], Reis et al. 2020:465 [ref. 38364], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Scleromystax macropterus (Regan 1913). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers from São Paulo to Santa Catarina states and some upper Paraná River tributaries (Brazil, Paraguay and Uruguay). Habitat: freshwater.