Melanophryniscus pachyrhynus (Miranda-Ribeiro, 1920)

Class: Amphibia > Order: Anura > Family: Bufonidae > Genus: Melanophryniscus > Species: Melanophryniscus pachyrhynus

Atelopus pachyrhynus Miranda-Ribeiro, 1920, Rev. Mus. Paulista, São Paulo, 12: 309. Syntypes: MZUSP (2 specimens); MZUSP 756 designated lectotype by Caramaschi and Cruz, 2002, Arq. Mus. Nac., Rio de Janeiro, 60: 304. Type locality: "São Lourenço, S. Paulo", Brazil. Corrected to "São Lourenço no Rio Grande do Sul", Brazil, by Bokermann, 1966, Lista Anot. Local. Tipo Anf. Brasil.: 14. Given as "Brazil, Rio Grande do Sul, São Lourenço do Sul (31° 22′ S, 51° 59′ W)" by Caramaschi and Cruz, 2002, Arq. Mus. Nac., Rio de Janeiro, 60: 303.

Melanophryniscus orejasmirandai Prigioni and Langone, 1987 "1986", Comun. Zool. Mus. Hist. Nat. Montevideo, 11: 2. Holotype: MHNM 5476, by original designation. Type locality: "Cerro de Animas (34° 46′S, 53° 19′ W), 500 metros al NO. [noroeste] del Mirador Nacional, Departamento de Maldonado, Uruguay". Synonymy by Baldo, Borteiro, Kolenc, Rosset, Prigioni, and Martínez-Debat, 2012, Zootaxa, 3235: 45-61.

Melanophryniscus pachyrhynusCaramaschi and Cruz, 2002, Arq. Mus. Nac., Rio de Janeiro, 60: 303.

English Names

Orejas-Miranda Redbelly Toad ([No longer recognized]: Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 44).


Known from São Lourenço do Sul, Rio Grande do Sul, Brazil, and Cuchilla de Mangrullo, Departamento de Cerro Largo and Sierra de Animals, Departamento de Maldonado, Uruguay.

Geographic Occurrence

Natural Resident: Brazil, Uruguay


In the Melanophryniscus tumifrons group of Cruz and Caramaschi, 2003, Bol. Mus. Nac., Rio de Janeiro, N.S., Zool., 500: 1-11. Removed from the synonymy of Melanophryniscus tumifrons by Caramaschi and Cruz, 2002, Arq. Mus. Nac., Rio de Janeiro, 60: 303-314, where it had been placed by Müller, 1934, Zool. Anz., 108: 153; Cei, 1980, Monit. Zool. Ital., N.S., Monogr., 2: 212. Borteiro, Kolenc, Tedros, and Gutierrez, 2005, Herpetol. Rev., 36: 199-200, provided the Uruguay record. Maneyro and Kwet, 2008, Stuttgart. Beit. Naturkd., Ser. A, Neue Ser., 1: 95-121, briefly discussed the geographic range, conservation status, and natural history, as well as commenting on the taxonomic history. Achaval and Olmos, 2003, Anf. Rept. Uruguay, ed. 2: 17, provided for nominal Melanophryniscus orejasmirandai a brief account and photograph. See photograph, map, description of geographic range and habitat, and conservation status, as Melanophryniscus orejasmirandai, in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 196. Caldart, Santos, and Maneyro, 2013, Acta Herpetol., Firenze, 8: 115–122, reported on the advertisement and release calls. Zank, Becker, Abadie, Baldo, and Maneyro, 2014, PLoS One, E 9(4: e94625): 1–11, provided modeled distribution maps for the species under climate change. See account by Maneyro, Langone, and Carreira, 2019, in Maneyro, Langone, and Carreira (eds.), Libro Rojo Anf. Rept. Uruguay: 41–46, for Uruguay.

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