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Pagai Island macaque
The Pagai Island macaque (''Macaca pagensis''), also known as the Pagai macaque or ''Bokkoi'', is an Old World monkey endemic to the Mentawai Islands off the west coast of Sumatra. It is listed as critically endangered on the IUCN Red List due to its ever-shrinking habitat. It formerly included the overall darker ''M. siberu'' as a subspecies, but this arrangement is polyphyletic,〔Roos, C., T. Zieglerb, J. K. Hodgesb, H. Zischlera, and C. Abegg. 2003. ''Molecular phylogeny of Mentawai macaques: taxonomic and biogeographic implications.'' Molecular Phylogenetics and Evolution 29(1): 139-150.〕 leading to the two being classified as separate species. Both were formerly considered subspecies of ''M. nemestrina''.〔
== Description ==
Pagai Island macaque males are generally larger than females. The males' body lengths range from 45–55 cm and females' body lengths are around 40–45 cm. Tail length is 13–16 cm for males and 10–13 cm for females. Males are also heavier, weighing around 6–9 kg while females weigh 4.5–6 kg. Their backs have a dark brown coloration, and chestnut to pale ochre on the sides of the neck, the front of the shoulders and the undersides of this species. Legs are brown and their arms, reddish brown. The faces of a Mentawai macaques are furless and black-skinned with brown eyes. They have cheek pouches to carry food while foraging.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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