Black-shanked douc  (Pygathrix nigripes)

A member of the attractive colobid subfamily, the black-shanked douc has recently gained species status, having previously been a subspecies of the douc langur (Pygathrix nemaeus). Like other doucs, this species is striking, with large, almond-shaped eyes surrounded by yellow circles that stand out against the blue-grey face. White muzzle fur, long, white whiskers, and black forehead fur frame the face, giving the monkey a wise appearance. The black forehead colouration extends over the head and onto the shoulders, where it fades to grey across the back and forelimbs, appearing palest on the belly. The hind limbs are black, and there is a white patch on the rump surrounding the extremely long, tasselled, white tail. Males have a circular white spot on either side of the rump, but are more easily distinguished from females by their blue scrotum and inner thighs, and bright pink penis (2).