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The Cat Ba langur (Trachypithecus poliocephalus), also known as the golden-headed langur, is a critically endangered species of langur endemic to Cát Bà Island, Vietnam.It is among the rarest primates in the world, and possibly the rarest primate in Asia, with population size estimated at less than 70 individuals.
The Cat Ba langur (Trachypithecus poliocephalus), or golden-headed langur, is endemic to Cat Ba Island and is one of the most endangered primates in the world. The langurs' population numbers, which used to be between 2,400 and 2,700, dwindled to as low as only 53 langurs in 2000 due to poaching for traditional medicine and habitat ...
It was formerly considered a subspecies of the Cat Ba langur (T. poliocephalus), which is now thought to be endemic to Vietnam. [2]Its taxonomy was previously uncertain; it has been considered a partially albinistic population of the François' langur (T. francoisi), a subspecies of Francois' langur, [3] a valid species (T. leucocephalus), or a subspecies, T. poliocephalus leucocephalus.
Lastly, the White-headed langur (T. leucocephalus), previously thought to be a subspecies of the Francois langur (T. Francois) or Cat Ba langur (T. poliocephalus), is currently recognized as a distinct species by IUCN Red List assessors and the American Society of Mammalogists, based on a 2007 paper by Groves. [17] [18] [19]
It also encompasses a few small islands and marine areas of the east of Cat Ba island. Primarily a limestone forest area, it has 839 vascular plant species which include 25 species which are listed in the Red Data Book of Vietnam. It is the only park in the world where Cat Ba langur (Trachypithecus poliocephalus) species is reported. Some ...
Cat Ba langur: Trachypithecus poliocephalus: 51–54 [3] CR [3] [3] Popa langur: Trachypithecus popa: 135–176 [4] CR [4] [4] Estimate for mature individuals. [4 ...
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Presbytis is a genus of Old World monkeys also known as langurs, leaf monkeys, or surilis. Members of the genus live in the Thai-Malay Peninsula , on Sumatra , Borneo , Java and smaller nearby islands.