抄録
The toque macaque (Ms), gray langur (Se) and purple-faced langur (Ss) inhabit varying ecological habitats. The ultimate goal of this study is to describe morphological sub-species patterns and compare them with genetic variation. Photographic records were collected during three field visits to Sri Lanka between 2004 and 2007. Ms in lowland dry zones have lighter body and tail color with relatively short head crown hair compared to Ms in the central regions where fur is dark brown to red and tails are black. Highland Ms are lighter in body and tail color than central ones and had the largest body size and longest head crown hair. Ss in the lowland wet and dry zones have a white rump patch and are smaller in size compared to highland Ss, who without a rump patch have both longer body fur and cheek hairs. For Se, no clear-cut morphological differences could be found other than that the more whitish body fur color of those in the southern lowland dry zone.
