Javan surili
species of mammal
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 public source identifies “Javan surili” as species of mammal. This brief keeps that definition visible, then builds a research path around Javan, surili and species.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jun 4, 2026. The linked authority identifier is Q285813. None of the 0 selected statements returned an explicit reference.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Javan surili” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.