ipanquianus, Tetragonopterus Cope [E. D.] 1877:44 [28] [Proceedings of the American Philosophical Society v. 17; ref. 18033] Río Urubamba, one of the sources of the Río Ucayale, Peru. Syntypes: ANSP 21114 (1), 21115-16 (2). Type catalog: Böhlke 1984:49 [ref. 13621] as holotype (21114) and paratypes. On p. 28 of separate. •Valid as Acrobrycon ipanquianus (Cope 1877) -- (Ortega & Vari 1986:7 [ref. 9708], Weitzman in Reis et al. 2003:223 [ref. 27061], Arcila et al. 2014:605 [ref. 33096], Koerber 2014:3 [ref. 33621], Sarmiento et al. 2014:183 [ref. 35004], Thomaz et al. 2015:Add. 5 [ref. 33893], Mirande & Koerber 2015:21 [ref. 35117], Briñoccoli et al. 2022:104 [ref. 39171]). Current status: Valid as Acrobrycon ipanquianus (Cope 1877). Characidae: Stevardiinae. Distribution: South America: Andean Piedmont of Amazon basin (Peru and Bolivia). Habitat: freshwater.