The Arunachal macaque, (Macaca munzala), is a new species of macaque native to Arunachal Pradesh in northeastern India. Its species name comes from munzala ("monkey of the deep forest") as it was called by the Dirang Monpa tribe. It was discovered as a new taxon in 1997 by noted Indian primatologist Anwaruddin Choudhury, but he thought it to be a new subspecies of Tibetan or Pere David's macaque (Macaca thibetana). It was described as a new species in 2004, when a group of scientists from the Nature Conservation Foundation, India reported it. It is the first species of macaque to have been discovered since 1903, when the Indonesian Pagai island macaque was discovered. This monkey was reported on the basis of a good quality photograph as the holotype. In 2011, some researchers suggested on