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.
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Macaca munzala article summary
1. In the article Macaca munzala: A New Species from Western Arunachal Pradesh,
Northeastern India a new subspecies of Macaque is described. In this article the new
species, Macaca munzala or Arunachal macaque, is morphologically distinct as well as
geographically isolated from the related species. This subspecies generally lives at
altitudes between 2000 and 3000 m which is higher than any other type of macaque. It
can be distinguished from related species by tail length, as well as distinctive facial
features and morphology. Some of these traits include a dark patch on their crown, facial
marks on the temple and forehead, and a pale collar around the neck. While the tale
length is used to identify these animals the lengths of the males tail’s overlap those
measurements of the Eastern Assamese macaques. The Arunachal macaque also has a
prognathous head and a prominent tail which are absent in the Tibetan macaques. In
addition to these the Arunachal macaques lack the bushy pale beard and cheek whiskers
characteristic of the Tibetan macaques.
Since the Macaca munzala has these distinctive characteristics which isolate it
from similar species it could be classified as a subspecies. In addition to these physical
differences that can arise from slight genetic differences and adaptations the individuals
being classified as Macaca munzala have been shown to be geographically isolated since
they primarily live at altitudes greater than that of other macaques. While these
characteristics may be proven to be insignificant in the future at this point in time they
identify these individuals as a subspecies.