Javan Grizzled Langur

The Javan surili (Presbytis comata) is a vulnerable species of Old World monkey endemic to the western half of Java, Indonesia, a biodiversity hotspot. Other common names by which it is known by include gray, grizzled or Sunda Island surili; grizzled or stripe-crested langur; Javan grizzled langur; grizzled, Java or Javan leaf monkey; langur gris. There are two subspecies of the Javan surili: Presbytis comata comata - Occurs in western Java Presbytis comata fredericae - Occurs in central Java This colobine species has a sacculated stomach to assist the breakdown in the cellulose from the leaves it feeds on. It has a small, slender face and tail, and large round stomachs. Its coloring ranges from dark gray to white. Leaf monkeys tend to be active during the day, spending up to 5 hours grooming themselves. == Distribution and habitat == The Javan surili occurs in the western half of Java, Indonesia. It ranges as far east as Mt. Lawu on the border with East Java. It is mostly confined to Sundaland due to changes in the geography, sea level and vegetation that occurred during the Pleistocene, and partly due to the type of vegetation and soil there today. The Javan…