A Delacour's Langur at the Endangered Primate Rescue Center in Cuc Phuong National Park. It  is slightly larger than most other Lutungs, and has a long, black and rather thick tail. It is predominantly black, with a distinctive creamy-white lower rump, belly and outer thighs, as if it wears a pair of white shorts.

Its head is black, with a tall and narrow crest, while the black face has silvery-white beard-like hairs on the sides, though in some individuals this whitish colouring may extend to behind the ears and to the forehead, and sometimes even to the top of the head.