cahuali, Tridentopsis Azpelicueta [M. de las M.] 1990:982, Figs. 1-4 [Revue Suisse de Zoologie v. 97 (no. 4); ref. 19207] Estancia El Bagual, Paraguay system, Formosa Province, Argentina, 26°10'53"S, 58°56'39"W. Holotype: MLP 8759 [ex 5-IX-89-1]. Paratypes: AMNH 89300 (2); CAS 67699 (4); MHNG 2479.08 (4); MLP 8760 [ex 5-IX-89-2] (15, 2 c&s), 8764 [ex 27-XII-89-1] (3). Type catalog: Ferraris 2007:426 [ref. 29155], Miquelarena & Nadalin 2014:12 [ref. 33466]. •Valid as Tridentopsis cahuali Azpelicueta 1990 -- (Burgess & Finley 1996:168 [ref. 22901], de Pinna & Wosiacki in Reis et al. 2003:286 [ref. 27061], López et al. 2003:41 [ref. 27366], Menni 2004:82 [ref. 28131], Ferraris 2007:426 [ref. 29155], Fernández et al. 2015:13 [ref. 35041], Mirande & Koerber 2015:38 [ref. 35117]). Current status: Valid as Tridentopsis cahuali Azpelicueta 1990. Trichomycteridae: Tridentinae. Distribution: Paraguay River basin, Argentina. Habitat: freshwater.