This species occurs in Malaysia (troughout the Malay Peninsula along with a few small adjacent islands), southern Myanmar (including the Mergui Archipelago), and southwestern Thailand (including adjacent islands). It is found north to 1510'N in Myanmar and Thailand (Groves 2001).
T. o. obscurusFound on Peninsular Malaysia, north to about Perlis (Groves 2001).
T. o. flavicaudaFound in northern Peninsular Malaysia, southern Myanmar (including James, Kisseraing, and King Islands in the Mergui Archipelago) and southwestern Thailand (including Koh Lak Island). On the mainland found from Perlis north to the northern border of the species' range (Groves 2001).
T. o. haloniferRestricted to Penang Island, Malaysia (Groves 2001).
T. o. carboFound off the western coast of Malaysia and Thailand, specifically on Terutao and Dayang Bunting Islands, and on Langkawi Island (Malaysia) (Groves 2001).
T. o. styxOccurs on East Perhentian Island and, possibly, adjacent eastern coastal Malaysia (Groves 2001).
T. o. seimundiOccurs on Phangan Island (Pennan Island), Thailand; may possibly occur in adjacent eastern Thailand as well (Groves 2001).
T. o. sanctorumRestricted to Zadetkyi Kyun (St. Matthew Island) in the Mergui Archipelago (Myanmar) (Groves 2001).
Rights Holder: International Union for Conservation of Nature and Natural Resources
Bibliographic Citation: Boonratana, R., Traeholt, C., Brockelmann, W. & Htun, S. 2008.
Trachypithecus obscurus. In: IUCN 2014 . IUCN Red List of Threatened Species. Version 2014.1 . <
www.iucnredlist.org>