DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Damselfly nymph. Light micrograph of a nymph (larval stage) of a Coenagrion damselfly. Nymphs, unlike typical insect larvae, resemble the adult form. Damselfly nymphs are aquatic, while the adults are winged. This view shows the head (lower left) with its two antennae. Between them is a hinged protrusible structure used to capture prey before the adult mouthparts have developed. The head also has two compound eyes. The thorax has three segments, each of which bear two legs (six in total). A pair of developing wings is visible on the third segment. Magnification: x4 when printed at 10 centimetres wide.
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