The West Javan langur[1] (Trachypithecus mauritius) is an Old-World monkey of the Colobinae subfamily.
- It was previously considered a subspecies of Trachypithecus auratus until Roos and Groves raised it to its own species. Its range is limited to the island of Java west of Jakarta.
- West Javan langurs have shiny black hair over most of their bodies, fading to dark brown on their legs and belly.
- Their hair extends in all directions around their face giving them the appearance of having beards, long sideburns, and bangs.
- Like other langurs, they have a very long tail than their body. Babies are born with bright orange fur that darkens to black with age.
- Females have yellow pubic spots; this and a slight difference in overall size is the only form of sexual dimorphism exhibited by the West Javan langurs.
