About Presbytis siamensis (Müller & Schlegel, 1841)
Taxonomic Classification
The white-thighed surili (Presbytis siamensis) is a primate species belonging to the Old World monkey family Cercopithecidae.
Habitat and Endemic Range
It is an arboreal species that lives in sub-montane forests, and is endemic to the Thai-Malay Peninsula, the Riau Archipelago, and Sumatra.
Recognized Subspecies
Four subspecies of white-thighed surili are recognized: the nominate subspecies P. s. siamensis, as well as P. s. cana, P. s. paenulata, and P. s. rhionis.
Common Name Etymology
This species gets its common name from the characteristic white patches found on the outer sides of its legs.
Alternative Common Names
It may also be called the pale-thighed langur or pale-thighed surili.
Ecological Significance
This primate is an important species for forest environmental diversity in the Malaysian region.
Forest Habitat Types
As an arboreal species, P. siamensis inhabits subtropical and tropical forest environments, including moist lowland forests and swamp areas.
Non-Forest Habitats
It can also live in non-forest terrestrial environments such as rural gardens.
Distribution Range
Its distribution centers mainly on the Malay Peninsula, and it can also be found in Sumatra and parts of Thailand.
