This species is known only from the type locality: Ilha de Alcatrazes, an island off the coast of the state of São Paulo, Brazil. The maximum elevation of the island is no more than 100m asl.
Habitat and Ecology
It occurs in primary and secondary forest, and has also been recorded from degraded forest. The breeding habits are unknown, but it presumably breeds in water by larval development.
The population status of this species is unknown.
Ilha de Alcatrazes was used as a military base in the past, but this is no longer the case. Although there currently is no human settlement on the island, direct disturbance of the species, and degradation of its habitat from touristic activities and fire are ongoing threats.
There are no protected areas established on the island. Further survey work is required to determine the biology and population status of this species.
This species was removed from synonymy (as a subspecies) of Scinax catharinae by Peixoto (1988).
Miguel Trefaut Rodrigues, Carlos Alberto Gonçalves da Cruz 2004. Scinax alcatraz. In: IUCN 2014