MELVYN YEO / SCIENCE PHOTO LIBRARY MELVYN YEO / SCIENCE PHOTO LIBRARY
Stalk-eyed fly (family Diopsidae) on a twig. Stalk-eyed flies are mostly tropical insects, with one species being found in North America. The length of the eye stalks varies and can be as long as their bodies, as seen here. Although having their eyes on stalks allows a greater range of vision, it also produces an aerodynamic handicap.
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