This species is known only from two localities: Guayaquil in western Ecuador, and extreme south-western coastal Colombia. It occurs at very low altitudes, close to sea level, and presumably occurs more widely than has been so far recorded, in particular between the known localities.
Habitat and Ecology
This is a subterranean species living in lowland tropical forest.
There is no information on its current population status, and it is known only from two specimens.
Deforestation as a result of expanding agriculture is a potential threat to it, but there is not enough information available to confirm this.
It is in need of taxonomic review (Wilkinson pers. comm.).
The taxonomic status of this species is unclear.
Luis A. Coloma, Santiago Ron, John Lynch, Mark Wilkinson 2004. Caecilia tenuissima. In: IUCN 2013