This species is endemic to Sri Lanka. The type series was collected at 150m asl in Kanneliya Forest Reserve (near Galle).
Habitat and Ecology
Adults are terrestrial and arboreal and prefer lowland moist forest habitats. Breeding takes place, and tadpoles have been found in, tree holes. It has not been recorded from modified habitats.
It is known only from the type locality, and is considered to be locally rare.
The species' habitat is protected within the Kanneliya Forest Reserve. However, its restricted range renders it vulnerable to stochastic threatening processes.
The only known population is protected within the Kanneliya Forest Reserve. There is a need for close monitoring of the population status of this species given that it is currently known only from a single site.
Kelum Manamendra-Arachchi, Anslem de Silva 2004. Ramanella nagaoi. In: IUCN 2014