Welcome to iNat! What a strange spider. Was it sitting in a web? The long second pair of legs suggests the family Philodromidae to me, but they don't spin orb webs.
Thank you very much.
Yeah, this was indeed a strange spider! I found in in Rajaji NP, Motichur. It's web was so thin and almost invisible, as if it was gliding in air!
I so want to know what this is !!
Dr Sudhikuma, Indian spider taxonomist, told me this was a male of Argiope sp. (Araneidae)