heterorhynchus, Xenocara Regan [C. T.] 1912:668, Pl. 76 (fig. 2) [Proceedings of the Zoological Society of London 1912 (pt 3) (art. 36); ref. 14862] Uruhuasi, Peru, elevation 4000 feet. Syntypes: BMNH 1911.12.20.35-36 (2). Type catalog: Ferraris 2007:221 [ref. 29155]. •Valid as Ancistrus heterorhynchus (Regan 1912) -- (Isbrücker 1980:69 [ref. 2303], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:437 [ref. 12860], Isbrücker 2001:25, 32 [ref. 25653], Isbrücker 2002:12 [ref. 27178], Fisch-Muller in Reis et al. 2003:376 [ref. 27061], Ferraris 2007:221 [ref. 29155]). •Synonym of Ancistrus marcapatae (Regan 1904) -- (Bifi et al. 2019:6 [ref. 36821]). Current status: Synonym of Ancistrus marcapatae (Regan 1904). Loricariidae: Hypostominae. Habitat: freshwater.