This species is known from forests in the state of Rio de Janeiro, Brazil.
Habitat and Ecology
It occurs on the forest leaf-litter in primary and secondary forest, where it also lays its eggs. It breeds by direct development. It has not been recorded from anthropogenic habitats, and has only been observed in good quality secondary forest.
It is a difficult species to find because it is so small but it is thought to be relatively common.
This species is threatened by habitat loss due to agriculture and infrastructure development.
More research into the species' Extent of Occurrence, ecological requirements and population status is needed. Conservation and maintenance of its habitat is also required. Its range includes several protected areas.
Ana Maria Telles, Sergio Potsch de Carvalho-e-Silva 2004. Brachycephalus didactylus. In: IUCN 2014