Lysapsus limellum Cope, 1862, Proc. Acad. Nat. Sci. Philadelphia, 14: 155. Holotype: "Mus. Smithsonian [USNM] (No. 5495)"; now lost according to Duellman, 1977, Das Tierreich, 95: 197. Type locality: "Paraguay. Taken on _____ river". Corrected to Río Curumba, Paraguay [= Corumbá, on Rio Paraguai, Mato Grosso do Sul, Brazil] by Cope, 1862, Proc. Acad. Nat. Sci. Philadelphia, 14: 351.
Hyla quadrilineata Steindachner, 1864, Verh. Zool. Bot. Ges. Wien, 14: 262. Nomen nudum. Coined as a synonym of Lysapsus limellum and attributed to Natterer.
Podonectes palmatus Steindachner, 1864, Verh. Zool. Bot. Ges. Wien, 14: 262. Nomen nudum provided originally as a synonym of Pseudis minuta and attributed to Fitzinger. ( Savage and Carvalho, 1953, Zoologica, New York, 38: 194, placed Podonectes palmatus in the synonymy of Lysapsus limellum based on examination of Steindachner's illustrations, specimens of Lysapsus limellum Cope, which must be considered to be types.)
Lisapsus limellum — Steindachner, 1867, Reise Österreichischen Fregatte Novara, Zool., Amph.: 50. Incorrect subsequent spelling.
Pseudis limellum — Boulenger, 1882, Cat. Batr. Sal. Coll. Brit. Mus., Ed. 2: 187. Berg, 1896, An. Mus. Nac. Hist. Nat. Buenos Aires, 5: 161.
Lysapsus limellus — Savage and Carvalho, 1953, Zoologica, New York, 38: 194. Incorrect subsequent spelling of the species name, a noun in apposition.
Lysapsus limellus limellus — Gallardo, 1961, Bull. Mus. Comp. Zool., 125: 126.
Pseudis limellum — Aguiar, Bacci, Lima, Rossa-Feres, Haddad, and Recco-Pimentel, 2007, Cladistics, 23: 462.
Uruguay Harlequin Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 97).
Uruguay, Paraguay, Bolivia, and northern Argentina, to Mato Grosso, Brazil.
See comment by De la Riva, Köhler, Lötters, and Reichle, 2000, Rev. Esp. Herpetol., 14: 51-52, who discussed taxonomic confusion in Bolivia and the likelihood of this nominal species being a composite. Achaval and Olmos, 2003, Anf. Rept. Uruguay, ed. 2: 36, provided a brief account and photograph for the Uruguay population. Brusquetti and Lavilla, 2006, Cuad. Herpetol., 20: 10, briefly discussed the range in Paraguay.
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