tenuis, Trichomycterus Weyenbergh [H.] 1877:12, Pl. 3 (figs. a-c) [Actas de la Academia Nacional de Ciencias Exactas, Buenos Aires. v. 3 (no. 1); ref. 14248] Small lake in Sierra de Cordoba, near Villa Cruz del Eje, Santa Fe, Argentina. Syntypes: (several) MSNG 8852 (2). Type catalog: Tortonese 1963:310 [ref. 10351], Ferraris 2007:424 [ref. 29155]. •Valid as Trichomycterus tenuis Weyenbergh 1877 -- (Burgess 1989:323 [ref. 12860], Fernández 2000:32 [ref. 26195], Miquelarena & Fernández 2000:44 [ref. 27633], López et al. 2002:60 [ref. 26808] dated 1979, de Pinna & Wosiacki in Reis et al. 2003:285 [ref. 27061], López et al. 2003:40 [ref. 27366], Ferraris 2007:424 [ref. 29155], Mirande & Koerber 2015:38 [ref. 35117]). Current status: Valid as Trichomycterus tenuis Weyenbergh 1877. Trichomycteridae: Trichomycterinae. Distribution: Córdoba Sierra, Argentina. Habitat: freshwater.