phrixosoma, Plecostomus Fowler [H. W.] 1940:233, Figs. 21-23 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 91 (for 1939); ref. 1432] Contamana, Río Ucayali basin, Contamana, Peru. Holotype (unique): ANSP 68650. Type catalog: Böhlke 1984:124 [ref. 13621], Ferraris 2007:298 [ref. 29155]. •Valid as Hypostomus phrixosoma (Fowler 1940) -- (Isbrücker 1980:30 [ref. 2303], Ortega & Vari 1986:17 [ref. 9708], Burgess 1989:432 [ref. 12860], Armbruster 2004:79 [ref. 27644]). •Valid as Squaliforma phrixosoma (Fowler 1940) -- (Isbrücker et al. 2001:22 [ref. 25649], Isbrücker 2001:31, 32 [ref. 25653], Isbrücker 2002:29 [ref. 27178], Weber in Reis et al. 2003:367 [ref. 27061], Ferraris 2007:298 [ref. 29155]). •Valid as Aphanotorulus phrixosoma (Fowler 1940) -- (Ray & Armbruster 2016:523 [ref. 34178] or a hybrid Aphanotorulus horridus x Aphanotorulus unicolor). •Valid as Aphanotorulus phrixosoma (Fowler 1940) -- (Oliveira et al. 2017:[7] [ref. 35225], Meza-Vargas et al. 2021:25 [ref. 39298]). Current status: Uncertain as Aphanotorulus phrixosoma (Fowler 1940). Loricariidae: Hypostominae. Distribution: South America: Río Ucayali basin (Peru). Habitat: freshwater.