Weighing between 8 and 10 kg, males are slightly larger than females which weigh from 6-8 kg. Body hair is grey, the arms are grey to black and hands, feet and legs are black. The face is bluish with large yellow eye rings, very different to that of the Red-shanked and Grey-shanked doucs. A black band of fur frames the face and extends down the side of the head and down the shoulders. The tail is the longest of the douc species at 66-84 cm.
The Black-shanked douc langur occurs in southern Vietnam and Eastern Cambodia. In Vietnam the total population is not known and sub populations are fragmented.
HABITAT AND ECOLOGY
The primary habitat for this species is broadleaf evergreen forest, with other known habitats including mixed deciduous, dry deciduous dipterocarp, mixed bamboo forests, and coastal dry forests. Predominantly folivorous, they also consume fruit and flowers depending on the season. The species is arboreal and diurnal, and live in single male, multiple female groups. On occasion these groups come together to form fission-fusion associations of up to 50 indivuduals.
Hunting for traditional medicine and subsistence is the main threat to this species, although they are also hunted to a lesser extent for the pet trade.
STATUS AND CONSERVATION
In Vietnam the species is listed as Endangered in the 2007 Vietnam Red Data Book and is protected by law under Decree 32/2006 ND-CP:1B. CITES Appendix I