Moth foot. Coloured scanning electron micrograph (SEM) of the tip of a leg from a moth. The end of an insect leg consists of the final segment, which is called the tarsus. The tarsus itself has several segments, and here ends in a pretarsus that has two claws. Scales and hair-like sensory structures are also seen. Insect claws are used to hold on to rough surfaces such as leaves and flowers Magnification: x15 when printed at 10cm high.