Hi Harsha, I think this fly looks a lot like a species of Tachinid Fly, Family Tachinidae. They can be large and usually have hairy abdomens.
Even though this is a reference for North American Tachinids, I think it will be helpful for you:
http://www.nadsdiptera.org/Tach/Gen/tachintr.htm
I am having a hard time finding a good online reference for Indian insects.
Comments (2)