Thorius grandis
family: Plethodontidae
subfamily: Hemidactyliinae

© 2010 Sean Michael Rovito (1 of 2)
Conservation Status (definitions)
IUCN (Red List) Status Endangered (EN)
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 known only from Puerto del Gallo, in the Sierra Madre del Sur de Guerrero, north-east of Atoyac de Alvarez, central Guerrero, Mexico, at 2,800-3,000m asl.

Habitat and Ecology

The species is terrestrial and inhabits pine-fir and pine-oak-fir forests, and is usually found under logs or under the bark of fallen rotting logs. It can live in somewhat degraded forest. It reproduces by direct development.


Recent observations show that the species still exists.

Population Trend


Major Threats

The main threat is habitat loss as a result of logging and expanding agriculture.

Conservation Actions

It has not been found in any protected areas, and there is an urgent need for forest protection along the Milpillas-Atoyac transect.

Red List Status

Endangered (EN)


Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, all individuals are in fewer than five locations, and there is continuing decline in the extent and quality of its habitat in central Guerrero, Mexico.


Gabriela Parra-Olea, David Wake 2008. Thorius grandis. The IUCN Red List of Threatened Species 2008: e.T59411A11933425. .Downloaded on 16 January 2019


IUCN Terms of Use