Mammal · GBIF taxon 2436535
Dusky Leaf Monkey
Trachypithecus obscurusAlso known as Spectacled Langur, Spectacled Leaf Monkey
Dusky leaf monkeys move with remarkable agility through the high canopy, using their long tails for balance while leaping between tree crowns. Infants are born bright orange, a striking coloration that triggers strong protective instincts among all group members until their coats darken around six months of age. Specialized multi-chambered stomachs allow these primates to ferment and break down tough, fibrous leaves that other animals cannot digest.
ArborealDiurnalFolivore
Licensed referenceno rights reserved, uploaded by Светлана Царахова · cc0
—observations
—countries
—peak records
EndangeredConservation statusIUCN Red List categoriesLCNTVUENCREWEXEndangeredRed List categories, explained →
Diet & prey
- Young leaves
- Wild fruits
- Forest flowers
Predators
- Leopards
- Reticulated Pythons
- Changeable Hawk-Eagles
ThreatsForest loss, habitat fragmentation, urbanization, and hunting
HabitatsTropical rainforests, mangrove forests, and coastal woodlands
Life span15–20 years
Size / weightNot available
Classification
- FamilyCercopithecidae
- SpeciesTrachypithecus obscurus
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Capable of a defensive bite or scratch if cornered; keep a respectful distance.
- What to notice
- Recognized by distinctive white rings surrounding dark eyes, pale mouth patches, and dark grey body fur.
- Support conservation
- Keep a quiet distance of at least ten meters to prevent causing stress to foraging troops.
Responsible observation
- Canopy Spotting: Scan high tree crowns during early morning and late afternoon when troops forage actively.
- Recognize Vocalizations: Listen for loud honking alarm calls that signal threats or group movement through the trees.
- Avoid Feeding: Never offer food, as habituated monkeys are prone to road collisions and aggressive behavior.
Competitor 
Canopy Neighbor (c) Ladislav Král, some rights reserved (CC BY-SA) · cc-by-sa
Predator (c) Rushen, some rights reserved (CC BY-SA) · cc-by-sa
Close Relative (c) Paul Prior, some rights reserved (CC BY), uploaded by Paul Prior · cc-by
Help improve the field guideSomething wrong?
Checking your Fauna account…Report a name, category, or profile issue for review.