virescens, Plecostomus Cope [E. D.] 1874:137 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 26; ref. 931] Upper Amazon [no specific locality]. Syntypes: ANSP 21280-83 (4, 1 specimen head only). Type catalog: Böhlke 1984:125 [ref. 13621], Ferraris 2007:298 [ref. 29155]. •Valid as Hypostomus virescens (Cope 1874) -- (Isbrücker 1980:38 [ref. 2303], Burgess 1989:433 [ref. 12860], Armbruster 2004:80 [ref. 27644]). •Valid as Squaliforma virescens (Cope 1874) -- (Isbrücker et al. 2001:22 [ref. 25649], Isbrücker 2001:31, 32 [ref. 25653], Isbrücker 2002:29 [ref. 27178], Weber in Reis et al. 2003:368 [ref. 27061], Ferraris 2007:298 [ref. 29155], Barriga Salazar 2014:113 [ref. 35745]). •Synonym of Aphanotorulus horridus (Kner 1854) -- (Ray & Armbruster 2016:519 [ref. 34178]). Current status: Synonym of Aphanotorulus horridus (Kner 1854). Loricariidae: Hypostominae. Habitat: freshwater.