Cat Ba langur (Trachypithecus poliocephalus) is a rare primate species endemic to Vietnam belonging to the genus Trachypithecus (Crested Langurs or Limestone Langurs).   Other names:  English: Cat Ba hooded black leaf monkey, golden-headed langur, and Tonkin hooded black langur.  Vietnamese: Voọc Cát Bà, Voọc đầu trắng, Voọc đen đầu vàng, Voọc đầu vàng.   …

The Hatinh langur (Trachypithecus hatinhensis) is a primate native to the forests of Vietnam, particularly in Quang Binh and Quang Tri provinces[1,2].  Despite its name, it is not found in Ha Tinh province. It is also called stripe-headed black langurs. The local Van Kieu minority refer to this langur as the ‘Con Cung’, which translates …