This species is known from Rio de Janeiro State including Ilha Grande, in Brazil. It occurs from sea level up to 1,200m asl.
Habitat and Ecology
This species occurs on the ground inside primary and secondary forest. It presumably breeds by direct development, like others in the genus. It has not been recorded outside forest.
It is a reasonably common species.
Clear cutting of the forest was a threat to the species habitat in the past but it has now stopped. Infrastructure development for human settlement and tourism is a major threat at present, including inside the protected areas.
This species occurs in a few protected areas. Conservation and maintenance of its habitat is needed. More research into the species' Extent of Occurrence and ecological requirements is needed.
Red List Status
Least Concern (LC)
Listed as Least Concern since, although its Extent of Occurrence is probably less than 20,000km2, it is relatively common, occurs within a few protected areas, and is unlikely to be declining fast enough to qualify for listing in a more threatened category.
Carlos Frederico da Rocha, Monique Van Sluys, Sergio Potsch de Carvalho-e-Silva, Ana Maria Telles 2004. Ischnocnema octavioi. The IUCN Red List of Threatened Species 2004: e.T56805A11534936. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56805A11534936.en .Downloaded on 20 January 2019