Hysteronotus Eigenmann [C. H.] 1911:171 Masc. Hysteronotus megalostomus Eigenmann 1911. Type by original designation (also monotypic). •Valid as Hysteronotus Eigenmann 1911 -- (Géry 1977:358 [ref. 1597], Weitzman & Fink 1985:1 et seq. [ref. 5203], Weitzman & Menezes 1998:186 [ref. 23843], Weitzman in Reis et al. 2003:224 [ref. 27061], Mirande 2009:8 [ref. 30267] in Characidae, Stevardiinae, Mirande 2010:533 [ref. 31006], Thomaz et al. 2015:4 [ref. 33893] Stevardiinae, tribe Hysteronotini, Sarmiento et al. 2014:184 [ref. 35004], Menezes et al. 2016:495 [ref. 34593], Melo et al. 2024:10 [ref. 41541] in Stevardiinae). Current status: Valid as Hysteronotus Eigenmann 1911. Stevardiidae: Stevardiinae.