Toque macaques (Macaca sinica) is a reddish-brown-coloured Old World monkey endemic to Sri Lanka, where it is locally known as the rilewa or rilawa (Sinhala රිළවා), (hence &quot;rillow&quot; in the Oxford English Dictionary). It is named for the toque-shaped whorl of hair on its head, rather like the bonnet of the related bonnet macaque. Habarana - Sri Lanka.