ourastigma, Corydoras Nijssen [H.] 1972:428, Fig. 8 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Rio Iquiri at road from River Branco village to Abuna, Rio Purus system, Acre, Brazil. Holotype: IRSNB 498. Paratypes: IRSNB 499 (orig. 1, now 0), MZUSP [ex IRSNB 499] (1), ZMA 110615 (1). Type catalog: Nijssen et al. 1982:48 [ref. 19236], Walschaerts 1987:19 [ref. 20755], Ferraris 2007:121 [ref. 29155]. •Valid as Corydoras ourastigma Nijssen 1972 -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:232 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:121 [ref. 29155], Tencatt & Ohara 2016:[12] [ref. 34353]). Current status: Valid as Corydoras ourastigma Nijssen 1972. Callichthyidae: Corydoradinae. Distribution: Purus River basin, middle Amazon system, Brazil. Habitat: freshwater.