longibarbis, Arius Castelnau [F. L.] 1855:36, Pl. 15 (fig. 2) [Animaux nouveaux or rares v. 2; ref. 766] Amazon River, Brazil. Holotype (unique): MNHN 0000-1189 (poor condition). Type catalog: Bertin & Estève 1950:55 [ref. 19575], Ferraris 2007:334 [ref. 29155]. Placed originally in "Arius ?". •Species inquirenda in Leiarius, family Pimelodidae -- (Lundberg & Littmann in Reis et al. 2003:437 [ref. 27061], Ferraris 2007:334 [ref. 29155]). •Valid as Leiarius longibarbis (Castelnau 1855) -- (Barriga Salazar 2014:114 [ref. 35745], Grant 2021:71 [ref. 38702]). Current status: Valid as Leiarius longibarbis (Castelnau 1855). Pimelodidae. Distribution: South America: Brazil and Ecuador. Habitat: freshwater.