This species occurs on the Pacific slopes of the Sierra Madre del Sur de Guerrero, central Guerrero, Mexico, at elevations from 700-950m asl.
Habitat and Ecology
It inhabits pine-oak forest and tropical deciduous forest. It is often found on low vegetation, under logs, rocks and vegetation along streams where it breeds.
It is not a common species.
Habitat loss as a result of smallholder farming activities and logging is the main threat to this species. A larva has been found with keratinised mouthparts, indicative of chytridiomycosis.
The range of this species does not include any protected areas, and protection and restoration of forested areas in Guerrero is urgently needed. Further research and survey work is needed to determine the extent to which chytrid poses a threat; there may beed a need to establish a captive assurance colony of this species.
Red List Status
Listed as Endangered because its Extent of Occurrence is less than 5,000km2, its Area of Occupancy is less than 500km2, its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its forest habitat.
Georgina Santos-Barrera, Luis Canseco-Márquez 2004. Ptychohyla erythromma. The IUCN Red List of Threatened Species 2004: e.T55909A11387775. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T55909A11387775.en .Downloaded on 22 January 2019