Species that contain: Hemiancistrus and megacephalus [ 2 ] records

macrops, Chaetostomus Lütken [C. F.] 1874:209 [8] [Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kjøbenhavn, Aaret 1873 (nos 13-14); ref. 2854] Suriname. Holotype (unique): ZMUC P30142 [ex 74]. Type catalog: Nielsen 1974:52 [ref. 9588], Ferraris 2007:243 [ref. 29155] Original genus is correctly Chaetostoma. On p. 8 of separate. •Valid as Hemiancistrus macrops (Lütken 1874) -- (Isbrücker 1980:50 [ref. 2303], Burgess 1989:434 [ref. 12860], Isbrücker 2001:26, 27 [ref. 25653], Isbrücker 2002:17 [ref. 27178], Fisch-Muller in Reis et al. 2003:386 [ref. 27061], Ferraris 2007:243 [ref. 29155]). •Probably a junior synonym of H. megacephalus (Günther 1868) -- (Cardoso & Lucinda 2003:74 [ref. 26858]). •Synonym of "Pseudancistrus" megacephalus (Günther 1868) -- (Armbruster et al. 2015:99 [ref. 33670]). Current status: Synonym of Pseudancistrus megacephalus (Günther 1868). Loricariidae: Hypostominae. Distribution: Suriname (?). Habitat: freshwater.

megacephalus, Chaetostomus Günther [A.] 1868:476 [Annals and Magazine of Natural History (Series 4) v. 1 (no. 6) (art. 56); ref. 1992] Probably Suriname. Holotype (unique): BMNH 1978.9.12.3. Type catalog: Ferraris 2007:244 [ref. 29155]. Original genus is correctly Chaetostoma. Also published in Günther (Sept.) 1868:232 [ref. 5756]. •Valid as Hemiancistrus megacephalus (Günther 1868) -- (Isbrücker 1980:51 [ref. 2303], Burgess 1989:434 [ref. 12860], Isbrücker 2001:26, 27 [ref. 25653], Isbrücker 2002:17 [ref. 27178], Cardoso & Lucinda 2003:74 [ref. 26858], Fisch-Muller in Reis et al. 2003:386 [ref. 27061], Ferraris 2007:244 [ref. 29155], DoNascimiento 2016:532 [ref. 34727]). •Valid as "Pseudancistrus" megacephalus (Günther 1868) -- (Armbruster et al. 2015:99 [ref. 33670]). Current status: Valid as Pseudancistrus megacephalus (Günther 1868). Loricariidae: Hypostominae. Distribution: Essequibo basin, Guyana and coastal drainages of Suriname: Guyana and Suriname. Habitat: freshwater.