Eupomplyx marmoratus Jan, 1857, Cenni Mus. Civ. Milano: 54. Type(s): MSNM. Type locality: "Georgia", USA. Nomen nudum attributed to Tschudi and Fitzinger, presumably on the basis of jar label names. Presumed to be in this synonymy on the basis of the similarity of orthography with Eupemphix marmoratus Steindachner, 1864 (DRF).
Eupemphix Nattereri Steindachner, 1863, Sitzungsber. Akad. Wiss. Wien, Phys. Math. Naturwiss. Kl., 48: 189. Syntypes: NHMW 13559, 16523, 16524.1-2, 16525.1-3, and 18500 (according to Häupl and Tiedemann, 1978, Kat. Wiss. Samml. Naturhist. Mus. Wien, 2: 16, and Häupl, Tiedemann, and Grillitsch, 1994, Kat. Wiss. Samml. Naturhist. Mus. Wien, 9: 21). Type locality: "Cuyaba in [Mato Grosso,] Brasilien".
Eupemphix marmoratus Steindachner, 1864, Verh. Zool. Bot. Ges. Wien, 14: 271. Nomen nudum.
Paludicola edentula Boettger, 1885, Z. Naturwiss., Halle, 58: 243. Types: Not designated, presumably in SMF. Type locality: "Paraguay, Amer. merid". Synonymy by Boettger, 1885, Z. Naturwiss., Halle, 58: 436; Nieden, 1923, Das Tierreich, 46: 163.
Physalaemus nattereri — Lynch, 1970, Copeia, 1970: 492.
Eupemphix nattereri — Nascimento, Caramaschi, and Cruz, 2005, Arq. Mus. Nac., Rio de Janeiro, 63: 313.
Cuyaba Dwarf Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 83).
Central and southeastern Brazil; eastern Paraguay; eastern Bolivia.
See account by Cei, 1980, Monit. Zool. Ital., N.S., Monogr., 2: 385-388. De la Riva, Köhler, Lötters, and Reichle, 2000, Rev. Esp. Herpetol., 14: 43, noted its occurrence in Bolivia. Lavilla and Cei, 2001, Monogr. Mus. Reg. Sci. Nat. Torino, 28: 90, noted that no specimens existed for Argentina. Brusquetti and Lavilla, 2006, Cuad. Herpetol., 20: 17, briefly discussed the range in Paraguay. Melo-e-Silva, Cruz, Bastos, Telles, and Diniz, 2008, Iheringia, Zool., 98: 493-500, reported on morphometric and genetic differentiation among populations in central Brazil.
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