First time seeing this...smallish insect. Which is this?
Brown, cricket or grasshopper?
It's a winged bush cricket (a cricket in the subfamily Trigonidiinae); it appears to be in the genus Homoeoxipha - see https://onlinelibrary.wiley.com/cms/asset/f43460e7-0aba-4122-93dc-c783f1983ebd/ens12223-fig-0001-m.jpg for an image.
You might be interested in obtaining this book - Orthoptera Diversity in Indian Biogeographic Zones: