"Golden red worm"

It should be Agrosteomela indica (Hope, 1831), based on colour pattern (the underside picture is very helpful here!), and body shape. Especially the relatively narrow shape of the pronotum should exclude Chrysomela populi, which has pretty much the same colouration and is also found in the Himalayan parts of India. The reference I gave above is very old! A. indica is treated on p. 47, as Paralina indica (Paralina is now synonym of Agrosteomela). Unfortunately, there is not much modern literature to identify Indian chrysomelids, and not much in terms of reliably identified photos on the internet (except for a few common pest species).