arenarius, Hemiancistrus Eigenmann [C. H.] & Allen [W. R.] 1942:185, Pl. 6 (fig. 2) [Fishes of western South America; ref. 1246] Yurimaguas, Peru. Holotype: CAS 77323 [ex IU 15356]. Paratypes: CAS 77324-26 [ex IU 15356-58] (1, 1, 1). Type catalog: Ferraris 2007:284 [ref. 29155]. See Fisch-Muller in Reis et al. 2003:392 [ref. 27061] fro more detailied type locality information. •Valid as Sophiancistrus arenarius (Eigenmann & Allen 1942) -- (Isbrücker et al. 2001:22 [ref. 25649], Isbrücker 2001:27, 32 [ref. 25653], Isbrücker 2002:29 [ref. 27178]). •Valid as Peckoltia arenaria (Eigenmann & Allen 1942) -- (Isbrücker 1980:55 [ref. 2303], Ortega & Vari 1986:17 [ref. 9708], Burgess 1989:434 [ref. 12860], Fisch-Muller in Reis et al. 2003:392 [ref. 27061], Armbruster & Werneke 2005:12 [ref. 28101], Ferraris 2007:284 [ref. 29155]). •Synonym of Peckoltia bachi (Boulenger 1898) -- (Armbruster 2008:7 [ref. 29740]). •Synonym of Peckoltichthys bachi (Boulenger 1898) -- (Armbruster 2015:99 [ref. 33670]). Current status: Synonym of Peckoltichthys bachi (Boulenger 1898). Loricariidae: Hypostominae. Habitat: freshwater.