ucayalensis, Hemiancistrus Fowler [H. W.] 1940:235, Figs. 24-25 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 91 (for 1939); ref. 1432] Contamana, Río Ucayali, Peru, 7°19'S, 75°04'W. Holotype: ANSP 68651. Paratypes: ANSP 68652-53 (2). Type catalog: Böhlke 1984:125 [ref. 13621], Ferraris 2007:285 [ref. 29155]. •Valid as Sophiancistrus ucayalensis (Fowler 1940) -- (Isbrücker et al. 2001:21 [ref. 25649], Isbrücker 2001:27, 32 [ref. 25653], Isbrücker 2002:29 [ref. 27178]). •Valid as Peckoltia ucayalensis (Fowler 1940) -- (Isbrücker 1980:57 [ref. 2303], Ortega & Vari 1986:17 [ref. 9708], Burgess 1989:435 [ref. 12860], Fisch-Muller in Reis et al. 2003:393 [ref. 27061], Armbruster & Werneke 2005:12 [ref. 28101], Ferraris 2007:285 [ref. 29155]). •Synonym of Peckoltia bachi (Boulenger 1898) -- (Armbruster 2008:7 [ref. 29740]). •Synonym of Peckoltichthys bachi (Boulenger 1898) -- (Armbruster et al. 2015:100 [ref. 33670]). Current status: Synonym of Peckoltichthys bachi (Boulenger 1898). Loricariidae: Hypostominae. Habitat: freshwater.