This langur has a silvery gray coat, a black face, and a crown-like crest. A study in Vietnam's karst region found that leaves were its main food.
The coat is silvery gray, the hands, feet, and facial skin are black, and hair rises in a central crest over the back of the head. The account notes individual variation in coat color.
Groups observed at a limestone hill in southern Vietnam ate leaves, especially young leaves; fruit and flowers were also recorded.
An extinction-risk assessment has not been added yet.