Dusky langur has various types of body color. According to the report, it is stated that there are 4 types or 4 groups, the color of which is different on the light and the dark shade. However, in general, the body color of dusky langur is gray. Its hand and feet is black in color. Its face is dark-gray or black-gray in color. Its hair on the head center is lighter color than any other parts, which looks like silver. Its upper and lower lips are spotted. It has white masking spot circled around the eyes, but some of dusky langurs may not have that white spot in a full circle. Newborn dusky langur will have bright yellow-orange in color and this color will change to gray when it is 3 months old.
Southern dusky langur, or generally called “dusky langur” is found in Myanmar, Thailand, and Malaysia. In Thailand, it is found in the Southern part.
It prefers eating leafs to fruits. It also eats insects.
It is normally found in forests ranging from highland forest on the mountains to mangrove forests. Dusky langur does not like to expose itself to people. It will move pass trees when seeing people or hind behind the trees in order to peek at invaders.
Dusky langur is mature and ready for mating at the age of 3 – 4 years. There is no certain season for mating. It is in heat for 3 weeks. Gestation period is around 140 - 150 days. One litter contains only one young.
Update : 11 April 2017