Crossodactylus Duméril and Bibron, 1841

Class: Amphibia > Order: Anura > Family: Hylodidae > Genus: Crossodactylus
13 species

Crossodactylus Duméril and Bibron, 1841, Erp. Gen., 6: 635. Type species: Crossodactylus gaudichaudii Duméril and Bibron, 1841, by monotypy.

Limnocharis Bell, 1843, Zool. Voyage Beagle, Part 5: 33. Type species: Limnocharis fuscus Bell, 1843, by monotypy. Synonymy by Nieden, 1923, Das Tierreich, 46: 490.

Tarsopterus Reinhardt and Lütken, 1862 "1861", Vidensk. Medd. Dansk Naturhist. Foren., Ser. 2, 3: 177. Type species: Tarsopterus trachystomus Reinhardt and Lütken, 1862, by monotypy. Synonymy by Hensel, 1867, Arch. Naturgesch., 33: 146; Lutz, 1930, Mem. Oswaldo Cruz, Rio de Janeiro, 24: 216.

Calamobates De Witte, 1930, in Massart (ed.), Miss. Biol. Belge Brésil, 2: 219. Type species: Calamobates boulengeri Witte, 1930, by monotypy. Synonymy by Lutz, 1930, Mem. Oswaldo Cruz, Rio de Janeiro, 24: 216.

English Names

Spinythumb Frogs (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 71).


From Alagoas (in northwestern Brazil) through southern Paraguay to Paraná (in southern Brazil), and northern Argentina.


The three species groups were defined by Caramaschi and Sazima, 1985, Rev. Brasil. Zool., 3: 43–49, and further discussed by Bastos and Pombal, 1995, Copeia, 1995: 436–439. Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543–583, suggested that Crossodactylus is the sister taxon of a clade composed of Megaelosia and Hylodes. Pimenta, Cruz, and Caramaschi, 2014, Arq. Zool., São Paulo, 45: 1–30, revised the Crossodactylus dispar complex.  Vittorazzi, Lourenço, Zattera, Weber, Recco-Pimentel, and Bruschi, 2021, Genet. Mol. Biol., 44 (2: e20200301): 1–9, reported on a ML tree of the species. 

Contained taxa (13 sp.):

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