White-fronted Langur

• Common Name: White-fronted Langur
• Taxonomy Classification Year: 1838
• Monkey Size: 106.68 to 118.87 cm (42 to 46.79 in)
• Skin Color(s): Grayish brown and yellowish brown
• Habitat: Forest
• Diet: Herbivorous
• Native Countries: Indonesia, Malaysia, Brunei

The white-fronted surili^[1] (Presbytis frontata) is a primate species in the Cercopithecidae family, the Old World Monkeys.

• It is native to the large island of Borneo, Malaysia, Indonesia, and possibly Brunei. The white-fronted surili has a high sagittal crest that slopes forward.
• The dorsal body of this species is primarily gray-brown, and the belly is yellowish-brown with a prominent white patch on the forehead.
• The tail is yellowish gray with a blackish tinge to the hands, feet, forehead, crown crest, and cheeks.
• There is a lighter forehead spot on the crown crest. This species has a hollowed-out stomach to help break down cellulose and enlarged salivary glands.
• The incisors are narrow, and the molars have a high, sharp ridge. The jaw is deep, and the face is short and broad.
• The thumb is reduced, and the hind legs are longer than the front legs. The average body mass for adult males is around 5.67 kg and for adult females is about 5.56 kg.

• The white-fronted surili monkeys are diurnal, which means they are active during the day. However, they are arboreal and spend most of their time in the lower canopy.
• This species prefers to eat immature leaves than more mature leaves.
• The group size varies between 10 and 15 individuals.
• The white-fronted surili moves through the forest quadrupedally. This species also jumps through the forest.
• Male species use loud calls to demarcate the group’s territory to communicate.