surumuense, Characidium Steindachner [F.] 1915:202 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 52 (no. 17); ref. 15071] Rio Surumú, tributary of Rio Branco, at Serra do Mello, Brazil. Syntypes: (3) NMW. Species illustrated and described in more detail in Steindachner 1915:34 [p. 20 of separate], Pl. 3 (fig. 3) [ref. 4244]. Buckup 1993:102 [ref. 20831] selected hasemani over surumuense. •Synonym of Characidium hasemani Steindachner 1915 -- (Buckup 1993:102 [ref. 20831], Buckup in Reis et al. 2003:89 [ref. 27061], Buckup 2024:298 [ref. 40817]). Current status: Synonym of Characidium hasemani Steindachner 1915. Crenuchidae: Characidiinae. Habitat: freshwater.