This species is known only from two locations in the lower Central Hill Country of Sri Lanka, at 1,550-1,600m asl, on either side of the Horton Plains Plateau, near Agarapatana and Haputale. Specific records come from Agra Bopath and the Tangamalai Sanctuary (Manamendra-Arachchi and Pethiyagoda 2005).
Habitat and Ecology
It occurs in both closed-canopy forests and open, anthropogenic habitats. Adults have been observed at night on stream banks and perched on branches 1-4m above ground (Manamendra-Arachchi and Pethiyagoda 2005). Breeding is by direct development and the species is not dependent on water. The female excavates a deep hole in the forest floor where the eggs are then deposited.
It is uncommon.
It is threatened by the encroachment of tea cultivation, the removal of firewood, expanding human settlements, and agro-chemical pollution.
It is found in the Tangamalai Sanctuary and Agra Bopath Forest Reserve.
Red List Status
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2 and its Area of Occupancy is less than 500 km2, all individuals are in a single location, and there is continuing decline in the extent and quality of its habitat in the Central Hilly District of Sri Lanka.
Kelum Manamendra-Arachchi, Rohan Pethiyagoda 2004. Pseudophilautus silus. The IUCN Red List of Threatened Species 2004: e.T58904A11853057. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T58904A11853057.en .Downloaded on 22 January 2019