Pseudoeurycea obesa
Ridge Tail Salamander, Salamandra de Cola Estriada
Subgenus: Pseudoeurycea
family: Plethodontidae
subfamily: Hemidactyliinae
Species Description: Parra-Olea G, Garcia-Paris M, Hanken J, Wake DB 2005 Two new species of Pseudoeurycea (Caudata: Plethodontidae) from the moutains of northern Oaxaca, Mexico. Copeia 2005:461-469

© 2014 David Wake (1 of 4)
Conservation Status (definitions)
IUCN (Red List) Status Critically Endangered (CR)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Mexico



View distribution map using BerkeleyMapper.

From the IUCN Red List Species Account:


Range Description

This species is only known from the vicinity of the type locality at around 2,150 m asl on the mountain pass of Plan de Guadalupe in the Sierra de Mazateca of northern Oaxaca, Mexico. Future work might prove it to be more widespread than current records suggest. Its extent of occurrence is 10 km2.

Habitat and Ecology

The natural habitat of this species is cloud forest consisting mainly of oaks, however the area around the type locality has almost completely been deforested. The fact that individuals were found in such altered habitat might indicate that it has a great tolerance of habitat degradation, but it is unclear for how long it can tolerate such degradation. Individuals were found under small rocks and schist slabs in roadside talus. This species is presumed to reproduce by direct development.


This species is known from a total of five individuals collected on two separate trips at two adjacent localities (within 5 km of each other). Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.

Population Trend


Major Threats

This species is threatened by the significant deforestation caused by uncontrolled logging around the type locality.

Conservation Actions

Conservation Actions
This species is not known from any protected areas.

Conservation Needed
Habitat protection and management is needed.

Research Needed
Further studies are needed to determine the species full range and threats to the species.

Red List Status

Critically Endangered (CR)


Listed as Critically Endangered because its extent of occurrence (EOO) is 10 km2, it occurs in one threat-defined location, and there is continuing decline in the extent and quality of habitat in Oaxaca, with almost complete deforestation having occurred at type locality.


IUCN SSC Amphibian Specialist Group 2016. Pseudoeurycea obesa. The IUCN Red List of Threatened Species 2016: e.T61909A53989532. .Downloaded on 18 February 2019


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