DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Wasp sting. Coloured scanning electron micrograph (SEM) of the sting of the common wasp (Vespula vulgaris). The sting is a modification of the female ovipositor, or egg-laying organ. It is no longer used to lay eggs, but instead serves as a weapon of defence and attack. The sting consists of a lancet (red), with a venom sac at it base and attached muscles. When not in use the sting is encased in the abdomen (bottom). Magnification: x50 when printed at 10 centimetres wide.
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