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Stalk-eyed flies are insects of the fly family Diopsidae. The family is distinguished from most other flies by the possession of "eyestalks": projections from the sides of the head with the eyes at the end. Some fly species from other families such as Drosophilidae, Platystomatidae, and Tephritidae have similar heads but the unique character of Diopsidae is that the antennae are located on the stalk, rather than in the middle of the head as in all other flies. The size of the stalk-eyed flies span up to a centimeter long, and they feed on both decaying plants and animals.(Wiki)