Hatinh Langur

Common name for a species of Leaf Monkey with the scientific name Trachypithecus hatinhensis. It is a monotypic species, i.e. not a subspecies, and is only found in Vietnam and Laos, where it inhabits limestone forests. The Hatinh Langur is very similar to the Tonkin Leaf Monkey (Trachypithecus francoisi), i.e. mostly blackish with a brownish tinge and with white stripes on the cheeks. However, in the Hatinh Langur this so-called white beard extends behind the ears to the back of the head, whereas in the Tonkin Leaf Monkey, the white stripes on the cheeks run from mouth to ears and do not extend to the nape. It is also very similar to the Laotian Langur (Trachypithecus laotum), which is endemic to Laos, and besides a clear genetic difference between the two, the white cheeks also extend to behind the ears, though some may have largely white heads, with or without a dark crest, whereas yet others may have nearly unmarked, black heads. There are currently an estimated 600 animals still living in the wild. 回