Exastilithoxus Isbrücker [I. J. H.] & Nijssen [H.] in Isbrücker 1979:88, 91 Masc. Pseudacanthicus (Lithoxus) fimbriatus Steindachner 1915. Type by original designation (also monotypic). •Valid as Exastilithoxus Isbrücker & Nijssen 1979 -- (Isbrücker 1980:78 [ref. 2303], Burgess 1989:438 [ref. 12860], Armbruster 2002:87 [ref. 25891], Isbrücker 2002:15 [ref. 27178], Fisch-Muller in Reis et al. 2003:384 [ref. 27061], Armbruster 2004:53, 59 [ref. 27644], Ferraris 2007:236 [ref. 29155], Lujan 2008:413 [ref. 29847], Lujan & Birindelli 2011:45 [ref. 31408], Lujan et al. 2018:[15] [ref. 36081]). Current status: Valid as Exastilithoxus Isbrücker & Nijssen 1979. Loricariidae: Hypostominae.