Wildlife
François' langurs are one of the world's rarest monkeys. Handsome and athletic, they're found in northeast Vietnam and in two Chinese provinces: Guangxi and Guizhou. The Guangxi Province population has decreased by 85% in recent years, as a result of hunting and habitat loss. Troop females share parenting duties with each other, but the sole male plays no part in raising his offspring.
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Francois' langurs
The handsome and athletic langur is one of the world's rarest monkeys.
The handsome and athletic langur is one of the world's rarest monkeys.
The following habitats are found across the François' langur distribution range. Find out more about these environments, what it takes to live there and what else inhabits them.
Discover what these behaviours are and how different plants and animals use them.
Additional data source: Animal Diversity Web
Endangered
Population trend: Decreasing
Year assessed: 2008
Classified by: IUCN 3.1
François' langur (Trachypithecus francoisi), also known as Francois' leaf monkey, Tonkin leaf monkey, or white side-burned black langur is a species of lutung and the type species of its species group. It is the least studied of the species belonging to the Colobinae subfamily.
The species is distributed from Southwestern China to northeastern Vietnam. The total number of wild individuals is unknown, but there are believed to be less than 500 left in Vietnam and 1,400–1,650 in China. There are about 60 langurs in captivity in North American zoos. The species is named after Auguste François (1857–1935) who was the French Consul at Lungchow in southern China.
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Tree dweller
Adapted to climbing
Co-operative breeding
Hierarchical
Tactile sense
Acoustic communication
Herbivorous
Maternal care
Polygynous
Active at birth
Social
Chemical communication
Territorial
Visual communication
Viviparous