Arunachal macaque 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 the basis of morphological variation within the Assamese macaque, that it might be better treated as a subspecies. Subsequently, it was also discovered in Bhutan, where it was observed and photographed in the Trashi Yangshi area in 2006. The Arunachal macaque is compactly built and has a very dark face. It lives at high altitudes, between 2000 m
Rhesus macaque Jean-Baptiste Audebert, who applied the name to the species, stated: "it has no meaning". According to Zimmermann’s first description of 1780, the rhesus macaque is distributed in eastern Afghanistan, Bangladesh, Bhutan, as far east as the Brahmaputra Valley in peninsular India, Nepal, and northern Pakistan. Today, this is known as the Indian rhesus macaque "M. m. mulatta", which includes the morphologically similar "M. rhesus villosus", described by True in 1894, from Kashmir, and "M. m. mcmahoni", described by Pocock in 1932 from Kootai, Pakistan. Several Chinese subspecies of rhesus macaques were described between 1867 and 1917. The molecular differences identified