This species is known from the Pacific slopes of the Sierra Madre del Sur de Oaxaca, and north to the towns of San Gabriel and San Sebastián, in south-western Oaxaca, Mexico. It might occur a little more widely than current records suggest.
Habitat and Ecology
This species occurs in pine-oak and cloud forests, and prefers rocky streams with abundant vegetation as microhabitat. It presumably breeds in streams.
This has always been a rare species, but it appears to have gone into serious decline, and has not been recorded since the 1960s. Recent surveys to locate it have been unsuccessful, and it might now be extinct.
This species has disappeared in suitable habitat, probably due to chytridiomycosis. The disappearance of the fragments of cloud forest in Oaxaca, the most fragile habitat in Mexico, is also threatening this species. At present this area is under extreme pressure from human population growth.
The range of this species does not include any protected areas. While additional survey work is urgently needed to determine whether or not this species is still extant in its natural range, protection of the remaining cloud forest fragments is important to preserve the humid habitats for this species as well as other amphibians. It is listed by the Mexican government in the category "Special Protection" (Pr).
Red List Status
Critically Endangered (CR)
Listed as Critically Endangered because of a drastic population decline, estimated to be more than 80% over the last three generations, inferred from the apparent disappearance of most, or all, of the population, probably due to chytridiomycosis.
This species was previously included in the genus Hyla but has recently been moved to the new genus Charadrahyla (Faivovich et al. 2005).
Georgina Santos-Barrera, Luis Canseco-Márquez 2004. Charadrahyla altipotens. The IUCN Red List of Threatened Species 2004: e.T55384A11288683. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T55384A11288683.en .Downloaded on 19 December 2018