Zachaenus parvulus (Girard, 1853)

Class: Amphibia > Order: Anura > Family: Cycloramphidae > Genus: Zachaenus > Species: Zachaenus parvulus

Cystignathus parvulus Girard, 1853, Proc. Acad. Nat. Sci. Philadelphia, 6: 422. Type(s): Not stated; presumably originally in USNM or ANSP, but not reported on recent type lists so apparently lost. Type locality: "Rio de Janeiro, Brazil".

Zachaenus parvulusCope, 1866, J. Acad. Nat. Sci. Philadelphia, Ser. 2, 6: 94. Boulenger, 1882, Cat. Batr. Sal. Coll. Brit. Mus., Ed. 2: 257; Cochran, 1955 "1954", Bull. U.S. Natl. Mus., 206: 358

Oocormus microps Boulenger, 1905, Ann. Mag. Nat. Hist., Ser. 7, 16: 181. Syntypes: BMNH (4 specimens), by original designation. Type locality: "Organ Mountains, Brazil". Rendered as "Terezópolis ('Organ Mountains'), Rio de Janeiro", Brazil by Bokermann, 1966, Lista Anot. Local. Tipo Anf. Brasil.: 78. Synonymy by Lutz, 1944, Bol. Mus. Nac., Rio de Janeiro, N.S., Zool., 17: 42.

Ceratophrys fusciventris Lutz, 1926, C. R. Mém. Hebd. Séances Soc. Biol. Filial., Paris, 95 (1926, vol. 2): 1012. Syntypes: Not stated, presumably originally in IOC although Cochran, 1961, Bull. U.S. Natl. Mus., 220: 38, considered USNM 96313 a syntype. Type locality: "la montagne nommée Tijuca, près Rio [de Janeiro] à une altitude de 600 mètres au-dessus du niveau de la mer", Brazil. Synonymy by Cochran, 1961, Bull. U.S. Natl. Mus., 220: 38; Bokermann, 1966, Lista Anot. Local. Tipo Anf. Brasil.: 26.

Leptodactylus parvulusLutz, 1932, C. R. Mém. Hebd. Séances Soc. Biol. Filial., Paris, 109 (1932, vol. 1): 755.

English Names

Girard's Frog (Cochran, 1961, Living Amph. World: 93; Ananjeva, Borkin, Darevsky, and Orlov, 1988, Dict. Amph. Rept. Five Languages: 93).

Rio Bug-eyed Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 85).


Extreme eastern São Paulo to central Rio de Janeiro, Brazil; Serra da Torres, Espíritu Santo, Brazil.


Izecksohn and Carvalho-e-Silva, 2001, Anf. Municipio Rio de Janeiro: 90, provided a brief account and photo. Verdade, Cassimiro, and Rodrigues, 2009, Check List, 5: 755-758, provided a spot-map of the range. Oliveira, Coco, Pagotto, Pralon, Vrcibradic, Pombal, and Rocha, 2012, Check List, 8: 242-244, provided a record for Espíritu Santo, Brazil, and commented on the range.

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