The Pagai Island macaque (Macaca pagensis), also known as the Pagai Macaque or Bokkoi, is an Old World monkey that is 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, leading to the two being classified as separate species. Both were formerly...
