Description
English: White-headed langur in natural habitat
Date 28 October 2015
Source Own work
Author 18D ext2015
Source: https://commons.wikimedia.org/wiki/File:Langur_band.jpg

The white-headed langur (Trachypithecus poliocephalus) is a critically endangered langur. Two subspecies are recognized: T. p. poliocephalus in Cát Bà Island, Vietnam, and T. p. leucocephalus in Guangxi, China. The former (the nominate subspecies), often known as the golden-headed or Cat Ba langur, is among the rarest primates in the world, and possibly the rarest primate in Asia, with population size estimated at less than 70 individuals. Order: Primates, Family: Cercopithecidae.