From the IUCN Red List Species Account:

Range Description

This species occurs in the Andean foothills in the southwestern portion of the Amazon basin, in Bolivia. It is known from Yacuma, Beni, Cochabamba, Chapara and Santa Cruz, and is likely to occur more widely. It has been recorded from below 400m asl.

Habitat and Ecology

It is a subterranean species in lowland tropical rainforest. It is adaptable to secondary habitats, and its breeding habits are unknown.

Population

It was once thought to be extinct (Wake, 1993), but there have been some records from forests since then confirming its continued survival.

Population Trend

Unknown

Major Threats

The type locality has been converted to agricultural fields, but elsewhere in its range the habitat remains relatively undisturbed.

Conservation Actions

It occurs in Carrasco, Madidi and Amboro National Parks.

Citation

Claudia Cortez, Steffen Reichle, Ignacio De la Riva, Mark Wilkinson 2004. Caecilia marcusi. In: IUCN 2012