This species is known only from Vista Hermosa town, Sierra de Juárez, north-central Oaxaca, Mexico, at 1,800m asl.
Habitat and Ecology
It inhabits cloud forest, and occurs in mountain streams and rocky habitats.
This is a rare species.
The major threat is the loss of original, intact cloud forest due to smallholder agricultural activities and logging.
The range of this species does not include any protected areas, and the protection of remaining forested habitat in the Sierra de Juárez is urgent. This species is protected by Mexican law under the "Special Protection" category (Pr).
Red List Status
Critically Endangered (CR)
Listed as Critically Endangered because its Extent of Occurrence is less than 100km2 and its Area Of Occupancy is less than 10km2, all individuals are in a single location, and there is continuing decline in the extent and quality of its cloud forest habitat in Oaxaca, Mexico.
This species was previously included in the genus Hyla but has recently been moved to the new genus Megastomatohyla (Faivovich et al. 2005).
Georgina Santos-Barrera, Luis Canseco-Márquez 2004. Megastomatohyla mixe. The IUCN Red List of Threatened Species 2004: e.T55567A11332899. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T55567A11332899.en