Iotabrycon Roberts [T. R.] 1973:491 Masc. Iotabrycon praecox Roberts 1973. Type by original designation (also monotypic). •Valid as Iotabrycon Roberts 1973 -- (Géry 1977:359 [ref. 1597], Weitzman & Fink 1985:1 et seq. [ref. 5203], Weitzman & Menezes 1998:187 [ref. 23843], Weitzman in Reis et al. 2003:224 [ref. 27061], Mirande 2009:8 [ref. 30267] in Characidae, Stevardiinae, Zarske 2010:84 [ref. 30919], Mirande 2010:533 [ref. 31006], Thomaz et al. 2015:4 [ref. 33893] Stevardiinae, tribe Xenurobryconini, Melo et al. 2024:8 [ref. 41541] in Xenurobryconinae). Current status: Valid as Iotabrycon Roberts 1973. Stevardiidae: Xenurobryconinae.