Toque macaque Toque macaque The toque macaque ("Macaca sinica") is a reddish-brown-coloured Old World monkey endemic to Sri Lanka, where it is known as the "rilewa" or "rilawa" (Sinhala රිළවා), (hence "rillow" in the "Oxford English Dictionary"). With age, the face of females turn slightly pink, prominent in the subsp. "sinica". "M. s. sinica" is found from the Vavuniya, Mannar, up to the lowlands of Anuradhapura, Polonnaruwa, Puttalam, and Kurunegala along the arid zone of Monaragala, and Hambantota districts. "M. s. aurifrons" can be found sympatrically with subsp. "sinica" within intermediate regions of the country, such as Kegalle, parts of Kurunegala. They
Arunachal macaque and 3500 m above sea level, making it one of the highest-dwelling primates. It belongs to the "M. sinica" species-group of macaques, along with the Assamese macaque ("M. assamensis"), the Tibetan macaque ("M. thibetana"), the bonnet macaque ("M. radiata") and the toque macaque ("M. sinica"). The Arunachal macaque is apparently physically similar to the Assam and Tibetan macaques, while genetically closely related to the bonnet macaque of southern India. This is probably the result of convergent evolution, where organisms evolve similar physical features due to similar environmental selection pressure, while genetically they may have different origins. However, its full specific