Melanophryniscus montevidensis (Philippi, 1902)

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

Chaunus formosus Tschudi, 1838, Classif. Batr.: 87. Type(s): MNHNP, by original designation. Type locality: Not designated. Nomen nudum. Considered a synonym of Phryniscus nigricans by Duméril and Bibron, 1841, Erp. Gen., 6: 723 (their concept of which was based on specimens of Atelopus stelzneri according to Boulenger, 1894, Ann. Mag. Nat. Hist., Ser. 6, 14: 374). Synonymy by Langone and Lavilla, 2024, Comun. Zool. Mus. Hist. Nat. Montevideo, 13: 22. 

Bufo formosus — Duméril and Bibron, 1841, Erp. Gen., 6: 646.

Phryniscus montevidensis Philippi, 1902, Supl. Batr. Chil. Descr. Hist. Fis. Polit. Chile: 13. Type(s): None designated or known to exist; presumably not in the MNHNC. Type locality: "Montevideo", Uruguay.

Melanophryniscus stelzneri montevidensisKlappenbach, 1968, Comun. Zool. Mus. Hist. Nat. Montevideo, 9: 2.

Melanophryniscus montevidensisKlappenbach and Langone, 1992, An. Mus. Nac. Hist. Nat. Montevideo, Ser. 2, 8: 175–176.

Rana tricolor Larrañaga, 2015, Biblioteca Artigas. Colección de Clásicos Uruguayos, I: 695. Holotype: deposition not noted. Type locality: “Buceo”, Departamento de Montevideo, Uruguay. Synonymy by Langone and Lavilla, 2024, Comun. Zool. Mus. Hist. Nat. Montevideo, 13: 22

Common Names

Montevideo Redbelly Toad (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 44).

Distribution

Coastal region in the departments of Canelones, Maldonado, Montevideo, and Rocha, Uruguay; Barra do Chui, Rio Grande do Sul, Brazil (see comment). 

Geographic Occurrence

Natural Resident: Brazil, Uruguay

Comment

In the Melanophryniscus stelzneri group of Cruz and Caramaschi, 2003, Bol. Mus. Nac., Rio de Janeiro, N.S., Zool., 500: 1-11. See comment under Melanophryniscus atroluteus. Tedros, Kolenc, and Borteiro, 2001, Cuad. Herpetol., 15: 143, provided the Brazilian record. Langone, 1995 "1994", Mus. Damaso Antonio Larrañaga, Ser. Divulg. 5: 30-31, and Achaval and Olmos, 2003, Anf. Rept. Uruguay, ed. 2: 16, provided for the Uruguayan population a brief account. Maneyro and Kwet, 2008, Stuttgart. Beit. Naturkd., Ser. A, Neue Ser., 1: 95-121, provided comments on range and conservation status. See photograph, map, description of geographic range and habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 196. Baldo in Vaira, Akmentins, Attademo, Baldo, Barrasso, Barrionuevo, Basso, Blotto, Cairo, Cajade, Céspedez, Corbalán, Chilote, Duré, Falcione, Ferraro, Gutierrez, Ingaramo, Junges, Lajmanovích, Lescano, Marangoni, Martinazzo, Marti, Moreno, Natale, Pérez Iglesias, Peltzer, Quiroga, Rosset, Sanabria, Sanchez, Schaefer, Úbeda, and Zaracho, 2012, Cuad. Herpetol., 26 (Supl. 1): 134, suggested that unnamed populations to the south of Buenos Aires, Argentina, may be referable to this species, although these have subsequently been named as Melanophryniscus diabolicus and Melanophryniscus nigricans. Agnolin and Guerrero, 2017, Check List, 13(4): 11–15, reported on local extinction in the eastern part of Buenos Aires Province, Argentina. Kwet, Maneyro, Zillikens, and Mebs, 2005, Salamandra, 41: 1–18, reported on the call. Baldo, Vera Candioti, Haad, Kolenc, Borteiro, Pereyra, Zank, Colombo, Bornschein, Sisa, Brusquetti, Conte, Nogueira-Costa, Almeida-Santos, and Pie, 2014, Biol. J. Linn. Soc., 112: 417–441, reported on larval morphology.  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. Maneyro, Langone, and Carreira, 2019, in Maneyro, Langone, and Carreira (eds.), Libro Rojo Anf. Rept. Uruguay: 23–28, provided an account for Uruguay and discussed the putative populations in Buenos Aires Province, Argentina, now presumably associated with Melanophryniscus nigricans and/or Melanophryniscus diabolicusLangone and Lavilla, 2024, Comun. Zool. Mus. Hist. Nat. Montevideo, 13: 22–28, provided access to the literature of the species. 

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