negro, Corydoras Knaack [J.] 2004:81, Figs. 22-29 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 54; ref. 27989] Río Negro (main stream), "Restgewässer", Río Blanco system, Raum Urubicha, Provincia Nuflo de Chavez, Departamento Santa Cruz, Bolivia, 15°31.502'S, 62°56.208'W. Holotype: MTD F 28472. Paratypes: CAS 219274 (2); CJK uncat. (157); CIRA-UTB 1083 (2); MTD F 28473 (1); ZMA 123.1000.738 (1), 123.1000.739 (1); ZMB 33534 (1), 33535 (1). Type catalog: Ferraris 2007:121 [ref. 29155]. •Valid as Corydoras negro Knaack 2004 -- (Ferraris 2007:121 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras negro Knaack 2004. Callichthyidae: Corydoradinae. Distribution: South America: Blanco River drainage, Santa Cruz, Bolivia. Habitat: freshwater.