This species is known from Filo de Caballos and the former Parque Ecológico Estatal Omiltemi in the Sierra Madre del Sur de Guerrero, Guerrero, Mexico, at 2,500-2,950m asl.
Habitat and Ecology
The species is terrestrial and inhabits pine-oak-fir cloud forest and pine-oak forest, living under the bark of fallen logs. It can survive in slightly degraded habitats, but has disappeared where the forest has been lost. It presumably reproduces by direct development.
The species was relatively common as of 2006 (MesoAmerican Salamander Workshop 2007).
The major threat to the species is habitat loss due to subsistence agriculture, logging, and human settlement. All suitable habitat below 2,800m asl is now gone.
The Parque Ecológico Estatal Omiltemi, where this species occurs, has been degazetted leaving the species unprotected throughout its range. Protection of remaining pine-oak forest habitat in the Filo de Caballos is needed.
Red List Status
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, it is known from fewer than five locations, and there is continuing decline in the extent and quality of its habitat in Guerrero, Mexico. The species is now more precarious than in the last assessment because of the degazetting of Parque Ecológico Estatal Omiltemi.
Gabriela Parra-Olea, David Wake, James Hanken 2008. Thorius omiltemi. The IUCN Red List of Threatened Species 2008: e.T59422A11938047. http://dx.doi.org/10.2305/IUCN.UK.2008.RLTS.T59422A11938047.en