Stereocyclops incrassatus Cope, 1870

Class: Amphibia > Order: Anura > Family: Microhylidae > Subfamily: Gastrophryninae > Genus: Stereocyclops > Species: Stereocyclops incrassatus

Stereocyclops incrassatus Cope, 1870 "1869", Proc. Am. Philos. Soc., 11: 165. Holotype: MCZ 855 according to the original publication; given as MCZ 1525 (apparently renumbered), by Barbour and Loveridge, 1929, Bull. Mus. Comp. Zool., 69: 346. Type locality: "near Sao Matheos, [Espírito Santo,] south of Rio de Janeiro", Brazil (see comment).

Emydops hypomelas Miranda-Ribeiro, 1920, Rev. Mus. Paulista, São Paulo, 12: 286. Holotype: MZUSP, by original designation. Type locality: "Espirito-Santo, Porto Cachoeira [now Santa Leopoldina]", Brazil. Synonymy by Carvalho, 1948, Bol. Mus. Nac., Rio de Janeiro, N.S., Zool., 84: 5.

Hypopachus incrassatusParker, 1934, Monogr. Frogs Fam. Microhylidae: 111.

Ribeirina hypomelasParker, 1934, Monogr. Frogs Fam. Microhylidae: 116.

Stereocyclops incrassatusCarvalho, 1948, Bol. Mus. Nac., Rio de Janeiro, N.S., Zool., 84: 5.

Ribeirina hypomelasDunn, 1949, Am. Mus. Novit., 1419: 5.

English Names

Brazilian Dumpy Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 93).


Humid coastal forests in eastern Brazil from Pernambuco and Alagoas through Bahia to Minas Gerais and Espírito Santo.

Geographic Occurrence

Natural Resident: Brazil

Endemic: Brazil


See Cochran, 1955 "1954", Bull. U.S. Natl. Mus., 206: 371-372, for account. Carvalho, 1948, Bol. Mus. Nac., Rio de Janeiro, N.S., Zool., 84: 1-13, showed this species to be separate from Hypopachus mülleri (= Dermatonotus muelleri), stated that the type was collected in the littoral of Espírito Santo, and unscrambled the synonymies of the two species. Stereocyclops hypomelas (Miranda-Ribeiro, 1920) is probably a distinct species, based on unpublished data of Albuquerque (WCAB (now in MZUSP)). Cei, 1956, Invest. Zool. Chilen., 3: 65, considered this species a synonym of Dermatonotus muelleri. Moura, Andrade, and Freire, 2010, Check List, 6: 71-72, detailed the range and provided records from Alagoas and Pernambuco, Brazil. See Dubeux, Nascimento, Lima, Magalhães, Silva, Gonçalves, Almeida, Correia, Garda, Mesquita, Rossa-Feres, and Mott, 2020, Biota Neotrop., 20 (2: e20180718): 1–24, for characterization and identification of larvae north of the Rio São Francisco in the Atlantic Forest of northeastern Brazil. 

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