melanopogon, Ageneiosus Miranda Ribeiro [A. de] 1917:51 [Revista da Sociedade Brasileira de Sciências (Rio de Janeiro) v. 1; ref. 5742] Rio Solimões, Amazon River system, Brazil. Holotype (unique): whereabouts unknown. Type catalog: Ferraris 2007:68 [ref. 29155]. •Valid as Ageneiosus melanopogon Miranda Ribeiro 1917 -- (Burgess 1989:286 [ref. 12860]). •Synonym of Ageneiosus atronasus Eigenmann & Eigenmann 1888 -- (Ferraris in Reis et al. 2003:471 [ref. 27061], Ferraris 2007:68 [ref. 29155]). •Synonym of Tympanopleura atronasus (Eigenmann & Eigenmann 1888) -- (Walsh et al.2015:14 [ref. 33781]). Current status: Synonym of Tympanopleura atronasus (Eigenmann & Eigenmann 1888). Auchenipteridae: Auchenipterinae. Habitat: freshwater.