Abstract
The sister of Colostethus edwardsi and C. ruizi is described as a new species of Colostethus. The monophyly of the clade containing these three species is supported hy the occurrence of the anal sheath, and C. edwardsi + C. ruizi are united hy the synapomorphic ahsence of a tarsal keel or tubercle (present in all other dendrobatids); The type specimen of the new species is reported to have been collected within the urban arca of Apartadó, Antioquia, but the veracity of this information is questionable, given that the biogeographic scenario of a Chocoan lowlands species being the sister of two species from the subpáramo of the Cordillera Oriental is extremely unlikely.
Keywords
References
Grant, T., E. C. Humphrey, & C. W. Myers. 1997. The median lingual process in frogs: a bizarre character of Old World ranoids discovered in South American dendrobatids. Am. Mus. Novitates 3212: 1-40.
Grant, T. & C. W. Myers. Review of the Colostethus nubicola group (Anura: Dendrobatidae), with descriptions of five new species from the Chocoan lowlands of Colombia. Am. Mus. Novitates (in press).
Kaplan, M. 1997. A new species of Colostethus from the Sierra Nevada de Santa Marta (Colombia) with comments on intergeneric relationships within the Dendrobatidae. J. Herpetol. 31(3): 369-375.
Lynch, J. D. 1982. Two new species of poison-dart frogs (Colostethus) from Colombia. Herpetologica 38(3): 366-374.
Lynch, J. D., P. M. Ruiz-Carranza, & M. C. Ardila-Robayo. 1997. Biogeographic patterns of Colombian frogs and toads. Rev. Acad. Colomb. Cienc. 21(80): 237-248.
Myers, C. W. & W. E. Duellman. 1982. A new species of Hyla from Cerro Colorado, and other tree frog records and geographical notes from western Panama. Am. Mus. Novitates 2752: 1-32.
Péfaur, J. E. 1985. New species of Colostethus (Dendrobatidae). J. Herpetol. 19(3): 321-327.
Rivero, J. A. 1990 "1988". Sobre las relaciones de las especies del género Colostethus (Amphibia, Dendrobatidae). Mem. Soc. Cienc. Nat. La Salle 48(129): 3-32.
Savage, J. M. & W. R. Heyer. 1967. Variation and distribution of the treefrog genus Phyllomedusa in Costa Rica, Central America. Beitr. Neotrop. Fauna 5: 111-131.
![Creative Commons License](http://i.creativecommons.org/l/by-nc-nd/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.