Proceratophrys bigibbosa (Peters, 1872)

Class: Amphibia > Order: Anura > Family: Odontophrynidae > Genus: Proceratophrys > Species: Proceratophrys bigibbosa

Ceratophrys bigibbosa Peters, 1872, Monatsber. Preuss. Akad. Wiss. Berlin, 1872: 204. Holotype: ZMB 6790 according to Bauer, Günther, and Klipfel, 1995, in Bauer et al. (eds.), Herpetol. Contr. W.C.H. Peters: 45. Type locality: "Rio grande do Sul", Brazil.

Proceratophrys bigibbosaMiranda-Ribeiro, 1920, Rev. Mus. Paulista, São Paulo, 12: 303; Lynch, 1971, Misc. Publ. Mus. Nat. Hist. Univ. Kansas, 53: 134.

Proceratophrys cristinae Braun, 1973, Iheringia, Zool., 43: 91. Holotype: MRGS 04650, by original designation. Type locality: "Nova Petrópolis, RS [Rio Grande do Sul]", Brazil. Synonymy by Kwet and Faivovich, 2001, Copeia, 2001: 208.

English Names

Peters' Smooth Horned Frog (Proceratophrys bigibbosa: Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 84).

Cristina's Smooth Horned Frog (Proceratophrys cristinae [no longer recognized]: Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 84).


Southern Brazil (central and northern Rio Grande do Sul and adjacent Santa Catarina) and northeastern Argentina (two localities in Misiones Province), 300-1200 m elevation; likely into adjacent Paraguay.

Geographic Occurrence

Natural Resident: Argentina, Brazil


See accounts by Cei, 1980, Monit. Zool. Ital., N.S., Monogr., 2: 310-311, and Kwet and Faivovich, 2001, Copeia, 2001: 203-215 (who noted that it is a member of the Proceratophrys bigibbosa group and described the advertisement call). See comment under Proceratophrys palustris. Brusquetti and Lavilla, 2006, Cuad. Herpetol., 20: 27, suggested that this species likely occurs in adjacent Paraguay. See statement of geographic range, habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 623. Santos, Colombo, Leonardi, Zank, Schossler, Vieira, Grant, Borges-Martins, and Verrastro, 2009, Check List, 5: 922-925, provided a dot-map and discussed the range. Dias, 2018, Copeia, 106: 86–93, reported on larval morphology. Dias, Araujo-Vieira, Santos, and Both, 2019, Copeia, 107: 417–429, reported on larval morphology. Zanella and Busin, 2007, Check List, 3: 65–66, provided an additional locality from the municipality of Sertão, Rio Grande do Sul, Brazil, and mapped the range. 

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