eques, Corydoras Steindachner [F.] 1876:140 [92], Pl. 12 (fig. 3-3a) [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4225] Amazon River at Codajás, Amazonas, Brazil. Lectotype: NMW 61111 [ex NMW 46723]. Paralectotypes: NMW 46723-24 (1, 1), 64700 (3); MCZ 7748 (1), 8203 (2), 8204 (12), 8206 (1); ZMA 110473 [ex NMW 46723] (2). Type catalog: Nijssen et al. 1982:44-45 [ref. 19236], Ferraris 2007:116 [ref. 29155]. On p. 92 of separate. Lectotype selected by Nijssen & Isbrücker 1980:208 [ref. 6910]. •Valid as Corydoras eques Steindachner 1876 -- (Nijssen & Isbrücker 1980:208 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061] dated 1877, Ferraris 2007:116 [ref. 29155] dated 1877, Tencatt et al. 2013:258 [ref. 32752], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388], Ohara et al. 2016:550 [ref. 34772], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Osteogaster eques (Steindachner 1876) -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Osteogaster eques (Steindachner 1876). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Bolivia, Brazil, Ecuador and Peru). Habitat: freshwater.