This species is known only from the type locality, Boracéia, in São Paulo State, Brazil, at around 900m asl.
Habitat and Ecology
This species is found only in primary or secondary forest, primarily in leaf-litter, but it can also be found calling on low vegetation. It presumably breeds by direct development, like other species in the genus.
It is known only from a few specimens, but it is a very difficult species to find and is also hard to differentiate from other species, so other specimens might exist that have been misidentified. Visits to the type locality have heard it calling in great numbers, suggesting that it could be common, although it has not often been collected.
It is threatened by the extraction of palm trees, which is opening up the canopy of the forest and disturbing its habitat.
The type locality is within the protected area of the Estação Biológica de Boracéia.
Carlos Alberto Gonçalves da Cruz, Jaime Bertoluci 2004. Ischnocnema randorum. In: IUCN 2014