Ptychocharax Weitzman [S. H.], Fink [S. V.], Machado-Allison [A.] & Royero [R.] 1994:49 Masc. Ptychocharax rhyacophila Weitzman, Fink, Machado-Allison & Royero 1994. Type by original designation (also monotypic). •Valid as Ptychocharax Weitzman, Fink, Machado-Allison & Royero 1994 -- (Weitzman & Menezes 1998:187 [ref. 23843], Weitzman in Reis et al. 2003:227 [ref. 27061], Mirande 2009:8 [ref. 30267] in Characidae, Stevardiinae, Zarske 2010:84 [ref. 30919] but misspelled Ptychobrycon on p. 84, Mirande 2010:533 [ref. 31006], Thomaz et al. 2015:4 [ref. 33893] Stevardiinae, probably in tribe Xenurobryconini, Melo et al. 2024:8 [ref. 41541] in Xenurobryconinae). Current status: Valid as Ptychocharax Weitzman, Fink, Machado-Allison & Royero 1994. Stevardiidae: Xenurobryconinae.