Revised Classification of the Common/Hanuman Langur

Found this today while browsing on the net for info about Common Langurs. Posted it with my Langur photograph in the mammals section... thought of also posting it here as a separate thread.

The revised classification lists 7 distinct species- Semnopithecus ajax, S. dussumieri, S. entellus, S. hector, S. hypoleucos, S. priam, S. schistaceus- which were earlier all included as subspecies under one species, Semnopithecus entellus. Some of these species are supported by phylogenetic theories, while others still lack evidence.

References and citation:
Gray langur - Wikipedia, the free encyclopedia
Mammal Species of the World - Browse: Semnopithecus
Primate Factsheets: Gray langur (Semnopithecus) Taxonomy, Morphology, & Ecology (recommended)

Thanks Abhishek,
There are some good info in those links. Our member Chetan Nag is researching on langurs. May be he can throw some more light on this.

Cheers,
Sabyasachi