The Delacour's Langur is one of the rarest and most endangered primates of the earth, it is distinguished from other black Asian Langur's by its characteristic white lower back and outer thighs,and the thickly furred tail. The Delacour's Langur is endemic to the north central Vietnam in the series of limestone mountains in the provinces of Ninh Binh, Nam Ha, Hoa Binh,and Thanh Hoa, which is known as the Karst forest. Their population is about 281 to 317 individuals (in 2003)and its believed to be extirpated from three additional sites there are believed to be between 200 and 250 individuals (in 2008), 50 of them live in the only protected area of Van Long Nature Reserve, it is classified as Critically Endangered according to the IUCN the International Union for Conservation of Nature.
Threats are men hunting for meat, using parts and bones for the Chinese traditional medicine,quarrying for limestone (cement) which currently takes places away, this has affected the ranging behavior of this primates and the forest loss because of the rapid development of tourist facilities adjacent to protected areas (Van Long and Hoa Lu Nature Reserves).
The Delacour's Langur is one of the rarest and most endangered primates of the earth.
Their population is about 281 to 317 individuals (in 2003)and its believed to be extirpated from three additional sites now there are believed to be between 200 and 250 individuals, 50 of them live in the only protected area of Van Long Nature Reserve
