Eupomplyx Jan, 1857, Cenni Mus. Civ. Milano: 54. Type species: Eupomplyx marmoratus Jan, 1857m by monotypy. Nomen nudum attributed to Tschudi and Fitzinger, presumably on the basis of jar label names. Placement in this synonymy on the basis of similarity of spelling with Eupemphix Steindachner, 1863.
Eupemphix Steindachner, 1863, Sitzungsber. Akad. Wiss. Wien, Phys. Math. Naturwiss. Kl., 48: 188. Type species: Eupemphix nattereri Steindachner, 1863, by monotypy. Synonymy by.
Peralaimos Jiménez de la Espada, 1875, Vert. Viaje Pacif. Verif. 1862-1865: 163. Type species: Bufo stentor Jiménez de la Espada, 1872, by monotypy. Synonymy by Kellogg, 1932, Bull. U.S. Natl. Mus., 160: 77.
None noted.
Central and southeastern Brazil; eastern Paraguay; eastern Bolivia.
Nascimento, Caramaschi, and Cruz, 2005, Arq. Mus. Nac., Rio de Janeiro, 63: 312, removed Eupemphix from the synonymy of Physalaemus, where it had been placed by Lynch, 1970, Copeia, 1970: 488-496. Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543-583, in their study of Genbank sequences, suggested that recognition of Eupemphix renders Physalaemus paraphyletic, with at least Physalaemus signifer being more closely related to Eupemphix than to other species of Physalaemus; they, however, retained Eupemphix without comment.
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