Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Primates
- Family
- Cercopithecidae
- Genus
- Presbytis
Habitat
Hose's langurs primarily inhabit the lowland and montane rainforests of Borneo, especially in Sabah and Sarawak, Malaysia. They prefer dense, undisturbed forests with tall trees for foraging and shelter, but can also adapt to secondary growth areas. Their range includes hilly terrains up to about 1,000 meters elevation.
Diet
Hose's langurs mainly eat leaves, young shoots, fruits, and flowers, with a preference for the leaves of trees like figs and lianas. They are folivorous and spend much of their day feeding in the canopy, typically during the early morning and late afternoon. Their feeding behavior includes selective browsing to avoid toxic plants.
Behavior
Hose's langurs live in social groups of 5 to 20 individuals, typically consisting of multiple adult males, females, and juveniles, with a dominant male leading the group. They are diurnal and arboreal, spending most of their time in trees, and exhibit territorial behaviors like vocalizations and chases to defend their home range. They communicate through a variety of calls, including alarm calls to warn of predators, and engage in grooming to maintain social bonds.
Conservation Status
Hose's langur is classified as Vulnerable by the IUCN due to habitat loss from logging and palm oil plantations. Population trends are decreasing, with major threats including fragmentation of forests and hunting for the pet trade.