
Naming
There are four recognized subspecies of this lutung:⤷ "Trachypithecus pileatus pileatus"
⤷ "Trachypithecus pileatus durga"
⤷ "Trachypithecus pileatus brahma"
⤷ "Trachypithecus pileatus tenebricus"

Food
A study of their diet in winter found that they spend nearly 40% of the day time feeding on leaves, flowers and fruits. Leaves contributed nearly 60% of the diet and they foraged on as many as 43 different plant species.References:
Some text fragments are auto parsed from Wikipedia.