caudimaculatus, Corydoras Rössel [F.] 1961:49, Pl. 5 (figs. 1-2) [Senckenbergiana Biologica v. 42 (nos 1/2); ref. 9377] Main stream of upper Rio Guaporé, Rondônia, Brazil. Holotype: SMF 5291. Paratypes: NMW 61145 [ex SMF 5297] (1); SMF 5292-97 (6). Type information: Knaack 2003:16 [ref. 27879]. Type catalog: Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras caudimaculatus Rössel 1961 -- (Nijssen & Isbrücker 1980:199 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:223 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Knaack 2007:43 [ref. 29221], Ferraris 2007:115 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Hoplisoma caudimaculatum (Rössel 1961) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma caudimaculatum (Rössel 1961). Callichthyidae: Corydoradinae. Distribution: South America: Guaporé River drainage, western Amazon basin, Brazil and Bolivia. Habitat: freshwater.