The West Javan langur (''Trachypithecus mauritius'') is an

Old World monkey Old World monkey is the common English name for a family of primates known taxonomically as the Cercopithecidae (). Twenty-four genera and 138 species are recognized, making it the largest primate family. Old World monkey genera include baboons ...

from the

Colobinae The Colobinae or leaf-eating monkeys are a subfamily of the Old World monkey family that includes 61 species in 11 genera, including the black-and-white colobus, the large-nosed proboscis monkey, and the gray langurs. Some classifications spli ...

subfamily. It was formerly considered a subspecies of '' Trachypithecus auratus'' until it was elevated to a separate species by Roos and Groves. It is listed as

vulnerable Vulnerable may refer to: General * Vulnerability * Vulnerability (computing) * Vulnerable adult * Vulnerable species Music Albums * ''Vulnerable'' (Marvin Gaye album), 1997 * ''Vulnerable'' (Tricky album), 2003 * ''Vulnerable'' (The Used album) ...

by the IUCN. Its range is restricted to the island of Java west of Jakarta. Its range is currently restricted to Ujung Kulon National Park, Muara Angke Wildlife Reserve and Muara Gembong due to industrial development,

habitat fragmentation Habitat fragmentation describes the emergence of discontinuities (fragmentation) in an organism's preferred environment (habitat), causing population fragmentation and ecosystem decay. Causes of habitat fragmentation include geological proces ...

and the disconnection of protected areas. They are known to eat the leaves and fruits of Sonneratia in mangroves.

References

{{Taxonbar, from=Q20721794 Trachypithecus

West Javan langur The West Javan langur (''Trachypithecus mauritius'') is an Old World monkey from the Colobinae subfamily. It was formerly considered a subspecies of ''Trachypithecus auratus'' until it was elevated to a separate species by Roos and Groves. It ...

Primates of Indonesia Endemic fauna of Indonesia Fauna of Java Mammals of Indonesia Vulnerable fauna of Asia

Taxa named by Edward Griffith (zoologist)