Thoropa lutzi Cochran, 1938

Class: Amphibia > Order: Anura > Family: Cycloramphidae > Genus: Thoropa > Species: Thoropa lutzi

Thoropa lutzi Cochran, 1938, Proc. Biol. Soc. Washington, 51: 41. Holotype: USNM 97622, by original designation. Type locality: "Recreio dos Bandeirantes, Federal District, southwest of the city of Rio de Janeiro", Brazil.

Eupsophus lutziMyers, 1946, Bol. Mus. Nac., Rio de Janeiro, N.S., Zool., 55: 11.

Thoropa lutziBokermann, 1965, An. Acad. Brasil. Cienc., 37: 530; Lynch, 1972, Bull. S. California Acad. Sci., 71: 5.

English Names

Lutz's River Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 85).


State of Rio de Janeiro, Brazil, 200–800 m elevation.

Geographic Occurrence

Natural Resident: Brazil

Endemic: Brazil


Izecksohn and Carvalho-e-Silva, 2001, Anf. Municipio Rio de Janeiro: 89, provided a brief account and photo. 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: 421. Nunes-de-Almeida, Assis, Feio, and Toledo, 2016, PLoS One, 11(9: e0162617): 1–12, reported on vocalization and noted two populations with different advertisement call, one in Minas Gerais and Rio de Janeiro and the other in Espirito Santo (now Thoropa bryomantis). Ferreira, Mônico, Silva, Lirio, Zocca, Mageski, Tonini, Beard, Duca, and Silva-Soares, 2019, ZooKeys, 857: 152, noted an unnamed species, "Thoropa aff. lutzi" (now Thoropa bryomantis) in the region of Santa Teresa, Espírito Santo, Brazil. Assis, Lacerda, Guimarães, Peixoto, Luna, and Feio, 2021, Zootaxa, 4995: 505–522, redelimited the species in both geography and diagnosis to exclude what they named as Thoropa bryomantis, providing advertisement calls and morphometric differences. Larval morphology, anatomy, and phylogenetics reported on by Dias, Vera Candioti, Sabbag, Colaço, Silva, Haddad, Carvalho-e-Silva, and Grant, 2021, J. Zool. Syst. Evol. Res., 59: 1297–1321. 

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