This species occurs in Thailand from Chumphon southwards through Malaysia (Peninsular, Sarawak, Sabah, and the islands of Penang and Pulau Tiga), Indonesia (swampy areas of Sumatra, Natuna Besar and Kalimantan), and Brunei Darussalam, but is not reported from Singapore. It probably occurs more widely than current records suggest, especially in areas between known sites. It is found from lowlands up to 700 m asl.
Habitat and Ecology
It is known mainly from near pools, swamps, small lakes and slow-flowing rivers enclosed by rainforest, mature rubber plantations and swampy areas. It has also been recorded from a cave habitat (Boulenger 1912). Breeding takes place in still waters.
It is generally not uncommon where it occurs, but it is well camouflaged and its presence is best confirmed by its distinctive call.
In mainland Southeast Asia there are no specific threats recorded for the species. The loss of swamplands is a concern (caused by logging, plantations or wetland drainage) for some populations.
It is present in protected areas throughout much of its range. Effective preservation of suitable forest habitat is the main conservation measure needed for this species.
IUCN SSC Amphibian Specialist Group 2014. Hylarana glandulosa. In: IUCN 2014