punctatissimus, Chaetostomus Steindachner [F.] 1881:119 [19], Pl. 3 (figs. 3-3a) [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 43; ref. 14290] East shore of Rio Xingu, Pôrto de Mós, Pará State, Brazil, 1°45'S, 52°10'W. Holotype (unique): NMW 47206. Type catalog: Ferraris 2007:274 [ref. 29155]. Original genus is correctly Chaetostoma. On p. 19 of separate. Type locality information: Isbrücker & Nijssen 1991:349 [ref. 19201]. •Valid as Parancistrus punctatissimus (Steindachner 1881) -- (Isbrücker 1980:58 [ref. 2303], Burgess 1989:435 [ref. 12860]). •Valid as Oligancistrus punctatissimus (Steindachner 1881) -- (Rapp Py-Daniel 1989:239 [ref. 13470], Isbrücker & Nijssen 1991:349 [ref. 19201], Isbrücker 2001:26, 30 [ref. 25653], Isbrücker 2002:23 [ref. 27178], Fisch-Muller in Reis et al. 2003:390 [ref. 27061], Ferraris 2007:274 [ref. 29155]). •Valid as Spectracanthicus punctatissimus (Steindachner 1881) -- (Armbruster 2004:53 [ref. 27644] on generic placement, Lujan et al. 2009:53 [ref. 30056], Chamon & Papp Py-Daniel 2014:24 [ref. 33224], Chamon et al. 2018:[12] [ref. 35755]). Current status: Valid as Spectracanthicus punctatissimus (Steindachner 1881). Loricariidae: Hypostominae. Distribution: Xingu River basin, Brazil. Habitat: freshwater.