pixuna, Procerusternarchus Cox Fernandes [C.], Nogueira [A.] & Alves-Gomes [J. A.] 2014:103, Fig. 2-11, 14 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 163; ref. 33285] Amazonas, Rio Negro, São Gabriel da Cachoeira, Igarapé, Ducubixi, 0°00’39.2’’S, 67°15'34.7"W, Brazil. Holotype: INPA 33743. Paratypes: ANSP, INPA. Plus non-type specimens. Type catalog: Ferraris et al. 2017:[25] [ref. 35236]. •Valid as Procerusternarchus pixuna Cox Fernandes, Nogueira & Alves-Gomes 2014 -- (Ferraris et al. 2017:[25] [ref. 35236]). Current status: Valid as Procerusternarchus pixuna Cox Fernandes, Nogueira & Alves-Gomes 2014. Hypopomidae. Distribution: Negro River basin, Brazil. Habitat: freshwater.