Sumatran Surili
Presbytis melalophosSummary 1
The Sumatran surili (Presbytis melalophos) is a species of primate in the Cercopithecidae family. It is endemic to Sumatra in Indonesia. Its natural habitat is subtropical or tropical dry forests. It is threatened by habitat loss.
Habitat 2
Mitred leaf monkeys inhabit lowland and submontane dipterocarp and evergreen forests. They are also found on the margins of rivers. They prefer discontinuous understory at approximately ninety feet from the ground, but are occasionally found in the continuous main canopy and the highest, emergent layers of the forest.
Habitat Regions: tropical ; terrestrial
Terrestrial Biomes: rainforest
Physical description 3
Like all members of the genus Presbytis, mitred leaf-monkeys have a short rostrum and weakly-developed brow ridges. Mitred leaf monkeys have long forelimbs and relatively long hindlimbs, which is consistent with their preferred mode of locomotion, leaping and brachiation. They have long, bicolored tails and weigh an average of 6.0 kilograms. Males weigh only slightly more than females. Mitred leaf-monkeys are distinguished from other Presbytis species by their single-phrase call, pelage characters, and skull features such as long nasals and narrow interorbitals.
Presbytis melalophos has brownish-gray pelage with the ventral side lighter than the dorsum. The tail is bicolored and the head has a distinct black crest. There are four subspecies of Presbytis melalophos based on pelage differences, distinctions in vocalizations, and geographic location. P. m. bicolor is the whitest subspecies and P. m. sumatrana is the darkest subspecies. The pelage color of P. m. mitrata and P. m. sumatrana is intermediate. Neonates are white with a pale face and a dark, reddish-brown spinal stripe.
Average mass: 6.0 kg.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: male larger
Average mass: 6540 g.
Sources and Credits
- Adapted by Brian Martin from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Presbytis_melalophos
- (c) The Regents of the University of Michigan and its licensors, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/18668392
- (c) The Regents of the University of Michigan and its licensors, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/18668393
