This species is found from the lowlands and premontane slopes of south-western Costa Rica extending to the western portion of the Meseta Central (the central valley), at altitudes of 365-970m asl.
Habitat and Ecology
It is a subterranean species, found under logs and in leaf-litter in lowland and submontane rainforest. This is a viviparous species that is not dependent on water.
The population status of this species is unknown.
The extent to which deforestation is a threat to the species is unknown.
Its range includes Parque Nacional Corcovado and other national parks. It is in need of taxonomic review (Mark Wilkinson pers. comm.).
Savage and Wake (2001) recently removed this species from synonymy. Its taxonomic status is unclear.
Federico Bolaños, Marvalee Wake, Mark Wilkinson, Gerardo Chaves 2004. Dermophis occidentalis. In: IUCN 2013