Presbytis frontata

PROTECTED STATUS: CITES - Appendix II as Order Primates.

Sumber: Order Primates

DISTRIBUTION: N. W. and E. Borneo, except southwest.

Sumber: Order Primates

Habitat. Tall lowland, riparian and hill dipterocarp forest, up to elevations of 1000 m. The White-fronted Langur may also be found in secondary forest and old rubber tree plantations. Very little is known about its habitat use and ecology.

Sumber: Cercopithecidae

Movements, Home range and Social organization. The White-fronted Langur has never been studied in the wild. Groups are small, with a single adult male and 2 - 3 females. The home range is estimated to be larger than 100 ha. There are an estimated 13,400 White-fronted Langurs in Sarawak (Lanjak-Entimau), with densities of 1 - 7 groups / km?. Density estimates from ten differentsites are 1 - 5 groups / km? and 5 - 9 ind / km? ®.

Sumber: Cercopithecidae

Status and Conservation. CITES Appendix II. Classified as Vulnerable on The IUCN Red List. The White-fronted Langur is protected by Indonesian law and is totally protected in Sarawak. Its distribution is fragmented. It is frequently hunted in Sarawak for its gallstones and meat. Habitat loss for the White-fronted Langur has been very rapid, particularly due to conversion into oil palm plantations. It occurs in at least seven protected areas: Batang Ai National Park and Lanjak-Entimau Wildlife Sanctuary in Sarawak and Betung Kerihun, Bukit Baka-Bukit Raya, Gunung Palung, and Kutai national parks and Sungai Wain Protection Forest in Kalimantan. The level of protection that these areas offer, particularly in Indonesia, is insufficient, and there is a need to reinforce their management. In some areas, such as the north-western mountains (Lanjak-Entimau, Bantang Ai, and Bentuang Kerima), the White-fronted Langur seems to be common, but in other areas, it is evidently scarce.

Sumber: Cercopithecidae

Descriptive notes. Head — body 50 - 54 cm (males) and 47 - 50 cm (females), tail 70 - 74 cm (males) and 63 - 70 cm (females); weight ¢. 5 - 7 kg. The White-fronted Langur is pale grayish-brown above, with a yellowish-brown underside. Brow, crown crest, and cheeks are blackish and lower segments of limbs grade toward black of hands and feet. Tail is yellowish-gray. There is a naked patch of white skin on forehead (hence the common name) set off by one or two whorls of hair, with a tall, forward-leaning crown crest behind.

Sumber: Cercopithecidae