A rare monkey, Miller’s grizzled langur (Presbytis hosei canicrus), was thought to be extinct back in 2004, but has been found in Borneo in a new area, Wehea Forest in East Kalimantan, Borneo. Wehea contains at least nine known species of non-human primate, including the Bornean orangutan and gibbon. Despite this finding, this species is still very rare and is likely to be classified as very endangered.

Read the abstract in American Journal of Primatology.