This species occurs along the Atlantic coast of Brazil from the southeastern part of the State of Bahia, south to the State of Rio de Janeiro, Brazil. It ranges up to 1,000m asl.
Habitat and Ecology
This nocturnal species lives in primary and secondary forest, but not in open areas, where it lives on stones at the margins of forest streams, where it breeds. The tadpoles develop out of the water in the splash zone of waterfalls.
It is generally a common species. In the State of Rio de Janeiro, it was very common, then apparently disappeared for no obvious reason, and then reappeared and is now very common again.
The major threats are probably related to habitat loss due to agriculture, wood plantations, logging, fire and human settlement.
It occurs in several protected areas.
Vanessa Verdade, Sergio Potsch de Carvalho-e-Silva 2004. Cycloramphus fuliginosus. In: IUCN 2014