Silvery lutung
A species of Lutungs, Also known as Silvery langur Scientific name : Trachypithecus cristatus Genus : Lutungs
Silvery lutung, A species of Lutungs
Also known as:
Silvery langur
Scientific name: Trachypithecus cristatus
Genus: Lutungs
Content
Description General Info
Photo By Leonard Reback , used under CC-BY-SA-4.0 /Cropped and compressed from original 
Description
The silvery lutung is a medium-sized monkey with a long, non-prehensile tail. It has grey-tipped, dark brown or black fur, giving it a uniform silvery appearance. Unlike some related species, there are no paler markings on the face or body, except for a patch of whitish hair on the groin of females. A crest of fur runs along the top of the head, and the hair on the cheeks is long, often obscuring the ears. The hands and feet are hairless, with dark coloured skin, and have opposable thumbs and toes. Females range from 46 to 51 centimetres (18 to 20 in) in head-body length, with an average weight of 5.7 kilograms (13 lb) and a tail length of 67 to 75 centimetres (26 to 30 in). Males are slightly larger, from 50 to 58 centimetres (20 to 23 in) in length, with an average weight of 6.6 kilograms (15 lb) and a tail length of 67 to 75 centimetres (26 to 30 in). Like other langurs, the silvery lutung has a large three-chambered stomach to digest the cellulose found in its herbivorous diet. This allows for fermentation of food, and has some similarities with the stomach of ruminants. The intestine is unusually long, even compared to those of other langurs, and has a number of pouches along its length, which carry out further fermentation of plant matter. The teeth have grinding ridges and other modifications to allow the more efficient processing of tough leaves. 
General Info
Lifespan
20-25 years
Diet
Silvery lutung exhibits a diet predominantly composed of leaves, making it a folivorous species. Other significant food items include fruits, flowers, and seeds which contribute to its diverse dietary regimen.
Appearance
Silvery lutung is a medium-sized primate with a lean body and long limbs. It has thick, coarse fur, predominantly grey or grey-brown, with lighter underparts. A distinguishing feature is its impressive crest of long hair on the crown. The face is black and hairless, contrasting with the fur. Adult males have enlarged, white cheek patches. Its lengthy, bushy tail extends and curves upwards towards its end.
Behavior
Silvery lutung is a diurnal, arboreal primate, characterized by its predominantly folivorous diet but also consumes fruits and flowers. It demonstrates complex social dynamics in matrilineal societies, with groups led by dominant females. Communicative behavior—involving a range of vocalizations, gestures, and facial expressions—is inherent for silvery lutung. This species also engages in alloparenting, expanding their social bond and survival strategy.
Population
Decreasing
Scientific Classification
Phylum
Chordates Class
Mammals Order
Apes Family
Old world monkeys Genus
Lutungs Species
Silvery lutung 
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