Hylobates lar (Linnaeus, 1771), Malacca, Malaysia. Two subspecies in Thailand and southwest China (H. l. entelloides H. carpenteri, and possibly H. yunnensis); one in the Malay Peninsula (H. l. lar); one in north Sumatra (H. l. vestitus).
OTHER COMMON NAMES
English: Common gibbon, white-handed gibbon; French: Gibbon lar, gibbon a mains blanches; German: Weisshand-Gibbon; Spanish: Gibon de manos blancas.
Male size 17.1-23 in (44-59 cm), female 16.5-22.8 in (42-58 cm); male weight 11-16.8 lb (5-7.6 kg), female 9.7-15 lb (4.4-6.8 kg). White face ring, hands, and feet. Asexually dichromatic in Thailand (either very dark or very pale), otherwise polychromatic (dark brown to light buff); white face ring, often fainter in female.
East of Salween to Mekong Rivers in Thailand, and across into southwest China, south to Mudah River, West Malaysia; south of Perak and Kelantan Rivers in West Malaysia; north of Lake Toba in Sumatra, Indonesia.
Tropical evergreen rainforest.
Population density 2.9 groups/2.5 mi2 (km2); home range 101 ac (41 ha), 55% defended as territory 49.4 ac (20 ha); day range 0.9 mi (1.5 km). Male, simple or quiver hoots; female, longer climax to great call, eight notes, 21 seconds (Malaya), 18 seconds (Thailand), 14-17 seconds (Sumatra).
FEEDING ECOLOGY AND DIET
Diet is mainly fruit, including figs, also flowers, leaves, and animal matter.
Monogamous. Single young produced every two to three years.
Lower Risk/Near Threatened.
SIGNIFICANCE TO HUMANS
Elusive, respected, popular as pet in some areas. ♦
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