Lithoxus Eigenmann [C. H.] 1910:405, 412 Masc. Lithoxus lithoides Eigenmann 1912. Type by subsequent monotypy. Appeared in key in footnote (p. 405); we agree with Boeseman (1982:43 [ref. 492]) that this constitutes original description; described fully in Eigenmann 1912:242 [ref. 1227]. Type as name only in 1910; type by subsequent monotypy. •Valid as Lithoxus Eigenmann 1910 -- (Isbrücker 1980:77 [ref. 2303], Boeseman 1982 [ref. 492], Burgess 1989:438 [ref. 12860], Nijssen & Isbrücker 1990:327 [ref. 16655], Muller & Isbrücker 1993 [ref. 20657], Armbruster 2002:87 [ref. 25891], Isbrücker 2002:21 [ref. 27178], Fisch-Muller in Reis et al. 2003:389 [ref. 27061], Armbruster 2004:53, 59 [ref. 27644] dated 1909, Ferraris 2007:267 [ref. 29155], Lujan 2008:413 [ref. 29847], Lujan & Birindelli 2011:45 [ref. 31408], Lujan et al. 2014:15 [ref. 33495] as Lithoxus clade, Silva et al. 2017:151 [ref. 35668], Lujan et al. 2018:[15] [ref. 36081]). Current status: Valid as Lithoxus Eigenmann 1910. Loricariidae: Hypostominae.