A team of experts have discovered a new species of macaque in the Tibetan state of Modog and they are distinguishable from the other four kinds of macaque because of its penis. The new spcies is called Macacaleucogenys or the 'white-cheeked macaque'.

The white-cheeked macaque has an unusual shaped penis as they have a rounded penis and a dark, hairy scrotum. On the other hand, other macaque species have spear-shaped penises and white scrotums.

The experts also said that the new species also has thick, long hair around its neck.Editor Paul Garber has said that he believes that the discovery will lead to new discoveries in the area. He pointed out that there have very little scientific research in the area.

Researcher Chao Zhao said, "The forest in Modog is like a nature library, and we know very little about it. Discovery of the new macaque species suggests that there may be some species that still remain undiscovered in this area." Experts also said that the new species is threatened by hunting and planned construction.

The study was published in the American Journal of Primatology.