The mitered langur (Presbytis mitrata) is a species of monkey in the family Cercopithecidae. It was formerly considered a subspecies of the Sumatran surili, Presbytis melalophos (as Presbytis melalophos mitrata) but genetic analysis revealed that these are separate species.[1] [2] [3] The mitered langur is native to the island of Sumatra in Indonesia.[4] It is listed as endangered by the IUCN due primarily to deforestation, and also due to animals taken for pets.[4]
The mitered langur has gray or brown fur on its back, which is darker than on its belly, and the arms, legs and tail are even darker.[5] Its face is gray, with white ruffs on its cheeks and a white crown surrounded by a black arch on the top of its head.[5] The head and body length is between 42cm (17inches) and 57cm (22inches) and the tail is between 62cm (24inches) and 82cm (32inches) long.[5] It weighs up to about 5.9kg (13lb).[5]
The mitered langur is diurnal and arboreal.[5] Its diet consists of leaves, unripe fruits, flowers and seeds.[5]