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Head-body 53-68 cm; tail 19-38 cm; weight 7.8 kg (male) 6.1 kg (female).
A large macaque of varying shades of coat colour: yellowish brown, grey
brown to dark brown; always running lighter from front part to rear part.
Face and skin around anus naked and red in adult. Tail about half the
length of head-body. Some individuals have rather long beard.
ระบบนิเวศ :
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Hill evergreen forest to dry evergreen forest
รายละเอียดอื่นๆ ของแหล่งที่พบ :
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Chiang Rai; Tak (Huai Nua Pla, Ban Mae Lamao, Umphang);
Kanchanaburi (Si Sawat, Thong Pha Phum); Uthai Thani (Huai Kha
Kaeng); Chiang Mai (Weng Hang).