tectirostris, Chaetostomus Cope [E. D.] 1872:288, Pl. 15 (fig. 2) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Río Ambyiacu, Peru. Syntypes: ANSP 8298 (1), 8300 (1). Type catalog: Böhlke 1984:125 [ref. 13621] with 8298 as holotype, Ferraris 2007:221 [ref. 29155]. Original genus is correctly Chaetostoma. •Valid as Ancistrus tectirostris (Cope 1872) -- (Isbrücker 1980:73 [ref. 2303], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:437 [ref. 12860], Isbrücker 2001:25, 26 [ref. 25653], Isbrücker 2002:12 [ref. 27178]). •Synonym of Ancistrus hoplogenys (Günther 1864) -- (Fisch-Muller in Reis et al. 2003:376 [ref. 27061], Ferraris 2007:221 [ref. 29155], Koerber et al. 2017:60 [ref. 35267]). •Synonym of Ancistrus alga (Cope 1872) -- (Provenzano & Barriga-Salazar 2018:217 [ref. 36344]). Current status: Synonym of Ancistrus alga (Cope 1872). Loricariidae: Hypostominae. Habitat: freshwater.