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Emerald cockroach wasp, SEM

Emerald cockroach wasp, SEM

C032/4039

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Credit

DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY

Caption

Coloured scanning electron micrograph (SEM) of Emerald cockroach wasp head (Ampulex compressa). It stings the cockroach twice, the first sting in the thorax area causes a short and reversible paralysis, while the second sting near the subesophageal ganglion results in submissive, lethargic behaviour. Frequently the cockroach's antenna are severed to allow feeding on the haemolymph. The nest is closed after the wasp deposits an egg on the surface of the cockroach. American cockroaches (Periplaneta americana) groom themselves beyond their normal grooming patterns when stung by Ampulex compressa. They continue to do so even as the wasps cut the ends off their antennae and drink from them. Magnification: x4 when shortest axis printed at 25 millimetres.

Release details

Model release not required. Property release not required.

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