This species is known only from a single protected area that is in both São Paulo and Rio de Janeiro States, in south-eastern Brazil. It has been recorded above 500m asl, to at least 1,600m asl, although the upper limit of its altitudinal range is not known. It might occur more widely.
Habitat and Ecology
It occurs on vegetation near streams, in which it breeds, in primary and secondary forest.
It is not an uncommon species.
There are no current threats to its habitat at present, since it is only known to occur in a protected area, but it might occur outside this area in which case these parts of its habitat could be under threat.
The protected area which its known range is wholly within is Parque Nacional da Serra da Bocaina.
Carlos Alberto Gonçalves da Cruz, Sergio Potsch de Carvalho-e-Silva 2004. Scinax ariadne. In: IUCN 2014