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Wasp tarsus, SEM
Wasp foot. Coloured scanning electron micrograph (SEM) of the foot of a parasitoid wasp (Aphidius sp). This small wasp uses its ovipositor to inject an egg into an aphid. The developing wasp young (larva) feeds on and kills the aphid. This is the final segment of the leg, known as the tarsus. It contains two claws (blue) and a suction pad, or plantula (cyan between claws), that helps the wasp to grip smooth surfaces. The hairs on the leg are used to groom the wasp's body and wings. Magnification: x550 when printed 10 centimetres wide.
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