{"id":91,"date":"2025-09-07T16:14:56","date_gmt":"2025-09-07T16:14:56","guid":{"rendered":"https:\/\/wildpix.eu\/?p=91"},"modified":"2025-09-07T16:14:56","modified_gmt":"2025-09-07T16:14:56","slug":"dusky-leaf-monkey-trachypithecus-obscurus","status":"publish","type":"post","link":"https:\/\/wildpix.karits.eu\/index.php\/2025\/09\/07\/dusky-leaf-monkey-trachypithecus-obscurus\/","title":{"rendered":"Dusky leaf monkey\u00a0(Trachypithecus obscurus)"},"content":{"rendered":"\n
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Download image<\/a><\/div>\n<\/div>\n\n\n\n


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(also called Dusky Langur, Spectacled Langur)<\/em><\/p>\n\n\n\n

The Dusky Leaf Monkey<\/strong> is a gentle and highly social primate native to parts of Southeast Asia. Its distinctive white circles around the eyes and mouth give it a comical, “spectacled” appearance, making it one of the most easily recognized langurs. It belongs to the Colobinae<\/em> subfamily, specialized for a diet of leaves.<\/p>\n\n\n\n

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\ud83d\udc12 Identification<\/h2>\n\n\n\n
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  • Body length<\/strong>: 40\u201360 cm<\/li>\n\n\n\n
  • Tail length<\/strong>: 50\u201385 cm<\/li>\n\n\n\n
  • Weight<\/strong>: 6\u20138 kg<\/li>\n<\/ul>\n\n\n\n

    Appearance<\/strong>:<\/h3>\n\n\n\n
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    • Fur<\/strong>: Thick, soft, and dark grey to blackish<\/strong>, sometimes with a slight brownish tinge<\/li>\n\n\n\n
    • Face<\/strong>: Hairless, dark-colored face with:\n
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      • White circles around the eyes<\/strong><\/li>\n\n\n\n
      • White area around the mouth<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • Hands and feet<\/strong>: Pale or whitish in contrast to the dark body<\/li>\n\n\n\n
      • Juveniles<\/strong>: Bright orange or golden fur<\/strong> at birth, which gradually darkens with age<\/li>\n<\/ul>\n\n\n\n

        Their “spectacled” appearance makes them quite distinct from other primates.<\/p>\n\n\n\n

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        \ud83c\udf3f Habitat<\/h2>\n\n\n\n
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        • Primary habitats<\/strong>:\n
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          • Tropical rainforests<\/li>\n\n\n\n
          • Mangroves<\/li>\n\n\n\n
          • Coastal forests<\/li>\n\n\n\n
          • Secondary growth and plantation forests<\/li>\n\n\n\n
          • Limestone hills<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • Altitude range<\/strong>: Sea level up to ~1,500 meters<\/li>\n<\/ul>\n\n\n\n

            Found in southern Thailand, Peninsular Malaysia, and parts of Myanmar.<\/p>\n\n\n\n

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            \ud83c\udf7d\ufe0f Diet<\/h2>\n\n\n\n

            As folivores (leaf-eaters)<\/strong>, Dusky Leaf Monkeys primarily consume:<\/p>\n\n\n\n

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            • Young leaves<\/strong> (main diet)<\/li>\n\n\n\n
            • Fruits<\/strong><\/li>\n\n\n\n
            • Flowers<\/strong><\/li>\n\n\n\n
            • Seeds<\/strong><\/li>\n\n\n\n
            • Occasionally shoots<\/strong> and bark<\/strong><\/li>\n<\/ul>\n\n\n\n

              They have a complex, multi-chambered stomach adapted to ferment tough plant material, allowing them to extract nutrients from leaves.<\/p>\n\n\n\n

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              \ud83d\udd01 Behavior & Life Cycle<\/h2>\n\n\n\n

              Social structure<\/strong>:<\/h3>\n\n\n\n
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              • Live in small to medium-sized groups<\/strong> (5\u201320 individuals), typically:\n
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                • One dominant adult male<\/li>\n\n\n\n
                • Several females with their offspring<\/li>\n\n\n\n
                • Sub-adult and juvenile individuals<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

                  Breeding<\/strong>:<\/h3>\n\n\n\n
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                  • No fixed breeding season; births can occur year-round<\/li>\n\n\n\n
                  • Gestation: ~145\u2013150 days<\/li>\n\n\n\n
                  • Usually give birth to a single infant<\/strong><\/li>\n\n\n\n
                  • Mothers are very protective; all group members may help care for infants (allomothering<\/em>)<\/li>\n<\/ul>\n\n\n\n

                    Behavior<\/strong>:<\/h3>\n\n\n\n
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                    • Diurnal<\/strong>: Active during the day<\/li>\n\n\n\n
                    • Spend most of their time in trees (arboreal)<\/strong><\/li>\n\n\n\n
                    • Calm, gentle, and less aggressive than many other primates<\/li>\n\n\n\n
                    • Use a wide range of vocalizations, facial expressions, and body postures for communication<\/li>\n<\/ul>\n\n\n\n
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                      \ud83c\udf0d Distribution<\/h2>\n\n\n\n

                      Native to parts of Southeast Asia:<\/p>\n\n\n\n

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                      • Southern Thailand<\/strong><\/li>\n\n\n\n
                      • Peninsular Malaysia<\/strong><\/li>\n\n\n\n
                      • Parts of Myanmar<\/strong><\/li>\n<\/ul>\n\n\n\n

                        Closely related species and subspecies may be found across the broader Trachypithecus<\/em> group.<\/p>\n\n\n\n

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                        \ud83e\uddec Interesting Facts<\/h2>\n\n\n\n
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                        • Infant color change<\/strong> (from orange to dark) is believed to help adults easily recognize and protect vulnerable newborns.<\/li>\n\n\n\n
                        • Leaf-eating primates like dusky langurs have evolved specialized gut bacteria<\/strong> to help digest fibrous leaves.<\/li>\n\n\n\n
                        • Because of their gentle nature and striking appearance, they are popular among tourists and wildlife photographers.<\/li>\n\n\n\n
                        • They are mostly shy but may be tolerant of humans in certain tourist areas.<\/li>\n<\/ul>\n\n\n\n
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                          \ud83d\udee1\ufe0f Conservation Status<\/h2>\n\n\n\n
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                          • IUCN Red List<\/strong>: Near Threatened<\/li>\n\n\n\n
                          • Major threats:\n
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                            • Habitat destruction<\/strong> (deforestation, agriculture, development)<\/li>\n\n\n\n
                            • Hunting<\/strong> (for pet trade, bushmeat)<\/li>\n\n\n\n
                            • Human disturbance<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

                              Conservation efforts focus on habitat protection, anti-poaching measures, and education.<\/p>\n\n\n\n

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                              The Dusky Leaf Monkey (Trachypithecus obscurus<\/em>)<\/strong> is a peaceful and beautiful species perfectly adapted to life in Southeast Asia\u2019s forests. Its expressive face and unique social behaviors make it a fascinating subject for both science and nature lovers.<\/p>\n\n\n\n