Lar Gibbon

• Common Names: Lar Gibbon, White-handed Gibbon
• Taxonomy Classification Year: 1771
• Monkey Size: 42.0 to 58.4 cm (16.54 to 22.99 in)
• Skin Color(s): Gray, black, brown
• Habitat: Forest, rainforest
• Diet: Omnivorous
• Native Countries: Indonesia, Laos, Malaysia, Myanmar, Thailand

The lar gibbon^[1] (Hylobates lar), also called the white-handed gibbon, is another endangered mammal in the gibbon family, Hylobatidae.

• It is among the best-known gibbons and is occasionally kept in captivity. Lar gibbons have a two-tone coat.
• They sport a dark coat that ranges from gray to black to tan or a light coat from light cream to tan.
• The bare face is encircled by a very short white or light-colored fur ring, and the hands and feet are white.
• Their elongated forelimbs, feet, and hands are used in their unique brachiation adaptations, which is their primary mode of locomotion through the treetops.
• Lar gibbons do not have a tail. Male species measure 43.5 to 58.4 cm, and female species 42 to 58 cm. Males weigh from 5 to 7.6 kg and females from 4.4 to 6.8 kg.

Being omnivorous, the Lar Gibbon consumes these plant sources^[¶]:

• Weeping Fig (Ficus benjamina).
• Council Tree (Ficus altissima).
• Monkey Jack (Artocarpus rigidus).
• Pulasan (Nephelium lappaceum)
• Clustertree (Ficus racemosa)
• Oriental Trema (Trema orientalis).
• Cowa Fruit (Garcinia cowa).
• Myrobalan (Terminalia bellirica)
• Javanese Treebine (Cissus nodosa).
• Brown-Woolly Fig (Ficus drupacea).
• Argus Pheasant Tree (Dracontomelon dao).
• Fig (Ficus)
• Ilang-Ilang (Cananga odorata)
• Bishopwood (Bischofia javanica)
• Jacareuba (Calophyllum brasiliense)
• Langsat (Lansium domesticum)

• Home territories are defended in encounters between groups and areas where domains overlap.
• Lar gibbons use vocalization for intra-specific communication. Normal duets are based on territoriality, signaling nearby groups that pose a threat.
• These gibbons are auto- and allo-grooming animals. On average, they spend 10 hours per day allo-grooming.
• Lar gibbons communicate with conceptual songs, which are combinations of solos and/or duets performed by closely related pairs.
• Although this species is very mobile, it does not gain security during this fixed period as it may fall asleep and not wake up until a predator is upon them.