The spacing between the prolegs and the claspers in this specimen is much greater than in most Geometridae., which generally sit on these 4 feet as a combined support. The body looks to me more like that of an Erebidae, but all the ones with reduced prolegs in that family, that I know of, still have 2 or 3 unatrophied pairs of prolegs.
Thanks, but sadly most Lepidoptera taxonomy has been done on adult insects, so identifying a larva is fraught, unless it can be taken into captivity to protect it from predators, and reared to obtain the adult.