This species is known from the Pacific slopes of Guerrero and Oaxaca, Mexico, at elevations between 700 and 2,000m asl. It probably occurs more widely than current records suggest.
Habitat and Ecology
It inhabits pine-oak and cloud forest, and is found in, or on, low vegetation along mountain streams. It breeds in streams and some populations have been found surviving in coffee plantations.
This is not a common species.
The main threat is habitat loss mainly as a result of deforestation and the planting of coffee and other non-timber plantations. Larvae have been found in southern Mexico with keratinised mouthparts, indicative of chytridiomycosis.
The range of this species does not include any protected areas, and the protection of the original forested areas in Guerrero and Oaxaca 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. This species is protected by Mexican law under the "Special Protection" category (Pr).
Red List Status
Listed as Endangered because its Extent of Occurrence is less than 5,000km2, its range is severely fragmented and there is a continuing decline in the number of mature individuals due to the effects of chytridiomycosis.
Georgina Santos-Barrera, Luis Canseco-Márquez, Joseph Mendelson III 2006. Ptychohyla leonhardschultzei. The IUCN Red List of Threatened Species 2006: e.T55913A11390054. http://dx.doi.org/10.2305/IUCN.UK.2006.RLTS.T55913A11390054.en .Downloaded on 17 January 2019