Presbytis potenziani

Status and Conservation. CITES Appendix I. Classified as Critically Endangered on The IUCN Red List (as P. potenziani potenziani). The Mentawai Langur is protected by Indonesian law. It is threatened by logging and hunting and is reported to be the second-most popular game species after the Pig-tailed Langur. On Siberut, where its sister taxon, the Siberut Langur, is found, local people are reported to climb up into their sleeping trees at night to shoot them; this hunting method may also be used for Mentawai Langurs. In recent years, hunting has intensified because of increased access to remote areas due to logging roads and tracks and the replacement of bows and arrows with rifles. Local rituals and taboos that formerly regulated hunting have been lost because of the Christian religion. Mentawai Langurs are occasionally kept as pets but do not thrive in captivity. Other threats include oil palm plantations, forest clearing, and product extraction by local people. Population decline of the Mentawai Langur is estimated at more than 50 % over the past 40 years. In 2005, the population was thought to number only 300 - 1200 individuals across the three islands. It is not found in any protected areas, but was present in the proposed Betumonga Research Area, which was logged by 2003. In 2006, the following conservation actions were suggested: protection of areas in the Pagai Islands by cooperating with a logging corporation that has practiced sustainable logging technique there since 1971; conservation education, especially regarding hunting; and the development of alternative economic models for the local people to reduce the likelihood of them selling off their lands to logging companies.

Sumber: Cercopithecidae

Descriptive notes. Head-body c. 50 cm, tail c. 58 cm; weight c. 6 - 5 kg (males) and c. 6 - 4 kg (females). The Mentawai Langur is jet-black above and on tail, with underside and innersides of thighs reddish-orange. Innersides of upper arms are whitish or reddish, and throat, cheeks, and chin are yellowish-white, grading backward through gray to the reddish color of underside. Brow band is whitish. Pubic region is yellowish-white in both sexes, and males have a white scrotum. Facial skin is black, becoming somewhat depigmented around the mouth. There is a small, erect, slightly forward-directed crest on crown and a ridge around chin and up to ears, where the forward-directed interramal hair stream meets the backward-directed cheek hair stream. Underparts are bright reddish-orange, with black-tipped hairs toward the midline of the chest. There may be slight differences between individuals on Sipora and the Pagaiislands.

Sumber: Cercopithecidae

Distribution. Mentawai Is (Sipora, North Pagai, and South Pagai Is, also on the islet of Sinakak off the E coast of South Pagai).

Sumber: Cercopithecidae