microcephalus, Hemiodus Günther [A.] 1864:298 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Rio Capin [= Capim], Pará State, Brazil. Lectotype: BMNH 1849.11.8.39. Paralectotype: BMNH 1849.11.8.40 (1). Lectotype selected by Langeani in Reis et al. 2003:99 [ref. 27061]. •Synonym of Hemiodus unimaculatus (Bloch 1794) -- (Langeani in Reis et al. 2003:99 [ref. 27061], Langeani 2024:369 [ref. 40817]). Current status: Synonym of Hemiodus unimaculatus (Bloch 1794). Hemiodontidae. Habitat: freshwater.