Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Primates
- Family
- Cercopithecidae
- Genus
- Presbytis
Habitat
Sumatran surili primarily inhabit tropical rainforests, including both lowland and montane forests in Sumatra and the Malay Peninsula. They prefer areas with dense canopy cover for foraging and protection, avoiding open or disturbed habitats.
Diet
Their diet consists mainly of leaves, young shoots, and fruits, with occasional flowers and seeds. They are folivorous primates that feed primarily in the trees during the day, using their specialized digestive system to process high-fiber foods. Feeding behavior includes selective browsing to avoid toxic plants.
Behavior
Sumatran surili live in social groups of 5 to 20 individuals, typically led by a dominant male, and communicate through various vocalizations and facial expressions. They are diurnal and highly arboreal, spending most of their time in the upper canopy, with territorial behaviors involving scent marking and chases to defend their range. These monkeys are agile leapers and exhibit grooming rituals to strengthen social bonds.
Conservation Status
The IUCN status of the Sumatran surili is Vulnerable, with populations declining due to habitat loss from deforestation and palm oil plantations. Major threats include hunting and fragmentation of forest habitats.