Dusky Leaf-monkey
Trachypithecus obscurus
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassMammalia (Mamífers)
- OrderPrimates
- FamilyCercopithecidae (Old World Monkeys)
- GenusTrachypithecus (Lutungs)
- SpeciesTrachypithecus obscurus (Dusky Leaf-monkey)
The dusky leaf monkey (Trachypithecus obscurus), also known as the spectacled langur or the spectacled leaf monkey, is a species of primate in the family Cercopithecidae. It is found in Peninsular Malaysia, Myanmar and Thailand, and can occasionally be found in Singapore. During the day, these small, folivorous primates divide in sub-groups and forage for vegetation and fruit throughout the tropical forests. According to the IUCN, the dusky leaf monkey's population is declining due to habitat loss, poaching, and anthropogenic land use, which prompted the IUCN to classify the species as endangered in 2015. Wikipedia →
60–70% of wildlife watchers report a Dusky Leaf-monkey sighting in Khao Sok National Park, based on 104 days of visitor records from GBIF citizen-science data.
Closest Relatives at Khao Sok National Park
Crab-eating Macaque
Macaca fascicularis
Northern Pig-tailed Macaque
Macaca leonina
Robinson’s Banded Langur
Presbytis robinsoni
Stump-tailed Macaque
Macaca arctoides
Southern Pig-tailed Macaque
Macaca nemestrina
Lar Gibbon
Hylobates lar
Sunda Slow Loris
Nycticebus coucang
Bengal Slow Loris
Nycticebus bengalensis
📅 Monthly Probability
🌅 When They're Spotted
Most active at dawn and dusk · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Khao Sok National Park | 🇹🇭 Thailand | |
| 2 | Kaeng Krachan National Park | 🇹🇭 Thailand |
Quick answers
What are the chances of seeing a Dusky Leaf-monkey in Khao Sok National Park?
About 62% of wildlife watchers report a Dusky Leaf-monkey sighting in Khao Sok National Park, based on 104 days of visitor records from GBIF citizen-science data.
When is the best time to see Dusky Leaf-monkey in Khao Sok National Park?
July has the highest sighting rate for Dusky Leaf-monkey in Khao Sok National Park in our monthly data.