Abstract
Charadrahyla esperancensis, a new species of tree frog, is described from the cloud forest of Sierra d Juárez on the northern slopes of Oaxaca. This species is sympatric with C. nephila and is distinguished by the presence of a protuding snout with a distinctive downward slope posterior to the nostril in lateral view, with an evident rostral keel, and the flanks and anterior and posterior surfaces of limbs with yellow spots. With the discovery of this new species, the species number of the genus increases to seven and adds another species of Charadrahyla for the assemblage of anurans from northern Oaxaca. This is the first instance of sympatry of species in the genus Charadrahyla. Additionally, we provide a key to the species of the genus.
References
Barrio-Amorós, C.L., García-Vázquez, U.O., Domínguez-Laso, M. & Nieto-Montes de Oca, A. (2016) Charadrahyla altipotens (Anura: Hylidae), a Critically Endangered treefrog rediscovered in Oaxaca, Mexico. Mesoamerican Herpetology, 3, 787−790.
Brown, J., Kothari, A., Martin, G.J., Camacho-Benavides, C.I., Del Campo García, C.A.,
Fonseca, S., Chapela Mendoza, F. & González Ortíz, M.A. (2011) Indigenous and community conserved areas in Oaxaca, Mexico. Management of Environmental Quality: An International Journal, 22, 250−266.
https://doi.org/10.1108/14777831111113419
Campbell, J.A. & Duellman, W.E. (2001) New species of Stream-breeding hylid frogs from the Northern Versant of the highlands of Oaxaca, Mexico. Scientific Papers, Natural History Museum The University of Kansas, 16, 1−28.
https://doi.org/10.5962/bhl.title.16165Campbell, J.A., Blancas-Hernández, J.C. & Smith, E.N. (2009) A New Species of Stream-breedingtreefrog of the genus Charadrahyla (Hylidae) from the Sierra Madre del Sur of Guerrero, Mexico. Copeia, 2009, 287−295.
https://doi.org/10.1643/CH-08-143Delia, J.R.J., Whitney, J.L. & Burkhardt, T. (2013) Rediscovery of ‘lost’ frog from the Oaxacan highlands of Mexico. Biodiversity and Conservation, 22, 1405−1414.
https://doi.org/10.1007/s10531-013-0481-9DeSantis, D.L., Mata-Silva, V., García-Padilla, E., Rocha, A., Wilson, L.D. & Ramírez-Bautista, A. (2016) Additional comments on the geographic distribution and conservation status of the recently rediscovered Voiceless Treefrog, Charadrahyla altipotens (Duellman, 1968) from Oaxaca, Mexico. Mesoamerican Herpetology, 3, 1073−1076.
Duellman, W.E. (2001) Hylid frogs of Middle America. Society for the study of Amphibians and Reptiles, Ithaca, New York, 1170 pp.
Grünwald, C.I., Franz-Chávez, H. & García-Vázquez, U.O. (2016) Rediscovery of the Critically Endangered treefrog Charadrahyla trux in the Sierra Madre del Sur of Guerrero, Mexico. Mesoamerican Herpetology, 3, 790−793.
Lips, K.R., Mendelson, J.R., III, Muñoz-Alonso, A., Canseco-Márquez, L. & Mulcahy, D.G. (2004) Amphibian population declines in montane southern Mexico: resurveys of historical localities. Biological Conservation, 119, 555–564.
https://doi.org/10.1016/j.biocon.2004.01.017Mendelson, J.R. III & Campbell, J.A. (1999) The taxonomic status of populations referred to Hyla chaneque in southern Mexico, with the description of a new treefrog from Oaxaca. Journal of Herpetology, 33, 80−86.
https://doi.org/10.2307/1565545
Pérez-Higareda, G. (1981) Hyla chaneque. Geographic distribution. Herpetological Review, 12, 64.
Toledo-Aceves, T., Meave, J.A., González-Espinosa, M. & Ramírez-Marcial, N. (2011) Tropical montane cloud forests: current threats and opportunities for their conservation and sustainable management in Mexico. Journal of Environmental Management, 92, 974–981.
https://doi.org/10.1016/j.jenvman.2010.11.007