This species is found only in the general Sinharaja region of south-western Sri Lanka from 150-660m asl. There are records from Sinharaja, Morawaka and Deniyaya (Manamendra-Arachchi and Pethiyagoda 2005).
Habitat and Ecology
It lives on the ground in leaf-litter, in damp shaded closed-canopy rainforest habitats. At night, males perch and vocalize from branches and leaves around 0.3m above ground (Manamendra-Arachchi and Pethiyagoda 2005). It is a direct developer and is not dependent on water.
It is a common species.
It is largely restricted to protected forests, and hence its habitat is generally well protected at present. However, it is probably impacted by firewood collecting and illegal gemstone mining.
It is found in the Sinharaja World Heritage Site, the largest remnant of Sri Lanka's forests, which was inscribed in 1988.
Kelum Manamendra-Arachchi, Rohan Pethiyagoda 2004. Pseudophilautus cuspis. In: IUCN 2014