Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Primates
- Family
- Cercopithecidae
- Genus
- Presbytis
Habitat
The White-fronted surili inhabits tropical rainforests and secondary forests in Borneo and Sumatra. They prefer dense canopy areas with plenty of trees for foraging and shelter, typically at elevations up to 1,000 meters. This species avoids open areas and is most common in undisturbed forest environments.
Diet
The White-fronted surili primarily eats young leaves, fruits, and flowers, with a preference for the leaves of trees like figs and lianas. They are folivorous, spending much of their day foraging in the canopy, and feed mainly during the early morning and late afternoon to avoid the heat. This diet helps them obtain necessary nutrients while minimizing energy expenditure.
Behavior
White-fronted surili live in groups of 5-20 individuals, typically led by a dominant male, and exhibit strong territorial behaviors including vocalizations to defend their range. They are diurnal and arboreal, spending most of their time in the trees where they move quadrupedally or leap between branches. These primates are generally quiet but can become vocal when alarmed, and they engage in grooming to maintain social bonds.
Conservation Status
The White-fronted surili is classified as Vulnerable by the IUCN due to habitat loss from logging and agriculture. Population trends are decreasing, with major threats including deforestation and fragmentation of rainforest habitats.