xinguensis, Corydoras Nijssen [H.] 1972:429, Fig. 9 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Suia Missú Creek, tributary of upper Rio Xingu near Posto Diauarum, about 11°15'S, 53°00'W, Mato Grosso State, Brazil. Holotype: IRSNB 500. Paratypes: IRSNB 501 (orig. 3, now 2), 502 (orig. 2, now 1), 511 (orig. 2, now 1); MZUSP [ex IRSNB 501] (1), [ex IRSNB 502] (1), [ex IRSNB 511] (1); USNM 205870 (1); ZMA 110392-93 (2, 1). Type catalog: Nijssen et al. 1982:51 [ref. 19236], Walschaerts 1987:19-20 [ref. 20755], Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:126 [ref. 29155]. •Valid as Corydoras xinguensis Nijssen 1972 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker & Nijssen 1992:13 [ref. 20559], Grant 1998:43 [ref. 23454], Isbrücker 2001:238 [ref. 26805], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:126 [ref. 29155], Espíndola et al. 2014:26 [ref. 33269], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[18] [ref. 34388]). •Valid as Hoplisoma xinguense (Nijssen 1972) -- (Dias et al. 2024:27 [ref. 41219] as xinguensis). Current status: Valid as Hoplisoma xinguense (Nijssen 1972). Callichthyidae: Corydoradinae. Distribution: South America: upper Xingu River basin, Brazil. Habitat: freshwater.