EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Wood ant abdomen. Coloured scanning electron micrograph (SEM) of the end of a European red wood ant's (Formica polyctena) abdomen. Wood ants can spray formic acid on their enemies from an acidopore at the end of their abdomens. Some can squirt the acid several feet if alarmed. Magnification: x53 when printed 10 centimetres wide.
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