marcapatae, Chaetostomus Regan [C. T.] 1904:246, Pl. 14 (fig. 1) [Transactions of the Zoological Society of London v. 17 (pt 3, no. 1); ref. 3621] Marcapata Valley, eastern Peru (río Inambari basin). Holotype (unique): BMNH 1902.5.29.211. Type catalog: Ferraris 2007:229 [ref. 29155]. Original genus is correctly Chaetostoma. •Valid as Chaetostoma marcapatae Regan 1904 -- (Isbrücker 1980:62 [ref. 2303], Ortega & Vari 1986:17 [ref. 9708], Burgess 1989:436 [ref. 12860], Isbrücker 2001:26 [ref. 25653], Isbrücker 2002:13 [ref. 27178], Fisch-Muller in Reis et al. 2003:381 [ref. 27061], Salcedo 2006:63 [ref. 28542], Ferraris 2007:229 [ref. 29155]). •Valid as Ancistrus marcapatae (Regan 1904) -- (Lujan et al. 2015:673 [ref. 33975], Bifi et al. 2019:6 [ref. 36821]). Current status: Valid as Ancistrus marcapatae (Regan 1904). Loricariidae: Hypostominae. Distribution: Beni and Madre de Dios drainages, Madeira basin, Peru and Bolivia. Habitat: freshwater.