Macaca munzala, also known as the Arunachal macaque, is described as a new subspecies found in western Arunachal Pradesh, India. It lives at higher altitudes than other macaque species, between 2000-3000m. The Arunachal macaque has distinguishing physical traits such as tail length, facial markings, and lack of facial hair seen in other macaques. While some traits overlap other species, overall it is morphologically and geographically isolated, qualifying it as a new subspecies.