Javan surili

The Javan surili, Presbytis comata, is a leaf-eating Old World monkey found only in the western half of Java, Indonesia, a biodiversity hotspot. It is also called the grey, grizzled or Sunda Island surili and the Javan grizzled langur, among other names. Two subspecies are recognised, Presbytis comata comata in western Java and Presbytis comata fredericae in central Java. As a colobine it has a sacculated stomach that helps it break down the cellulose in leaves, a small slender face and tail, and a coat that ranges from dark grey to white. It is active by day and spends up to five hours a day grooming. The species lives in primary and secondary lowland rainforest up to about 2,500 metres and ranges east as far as Mount Lawu on the border with East Java. Leaves make up most of its diet, young leaves especially, with flowers, fruit and seeds eaten as well, and it is more leaf-eating than any other member of the genus Presbytis. The IUCN lists it as Vulnerable because of habitat loss from forest clearing; fewer than 1,000 are estimated to remain in the wild and only about 4 percent of its original habitat is left, and the central Java subspecies is among the rarest and most at risk.