Found this possible grasshopper / cricket outside on the floor dead, i believe it has lost its back legs but cannot find any images of this species online. Was found in the UK midlands in July.
It is approx 25mm long and has think antennae about 25mm in length, wings the full length of the body and 4 short legs with what looks like holes where 2 rear legs were joined. It is brown in colour with a lime green under belly and green edges on the "armour plating" around the head and body. It also has a large spike at the rear, curved upwards about 6mm long and 3mm thick with 2 smaller spikes facing downwards above it.