Scientists find new Indian monkey. Note that the macaque resides in the mountains of Arunachal Pradesh, a rugged region of India whose inclusion in the Indian federation is more an accident of British colonial history than anything else. Last I read, the Indian government keeps a sort of cordon around Arunachal Pradesh, partly because of its strategic importance (the Chinese claim it and overran it in the 1962 war), and partly to preserve the indigenous cultures. I have read that Christian missionaries have converted and trained young people who leave Arunachal Pradesh to engage in proselytization among the predominantly "animist" locals since the the missionaries themselves are prevented from venturing into the state. So it is no surprise that large mammals, even primates, could be resident in this region without the outside world being aware.