GALL GNATS. Family Cecidomyiidae Identification: Minute flies, rarely over 3 mm., usually slender, with long legs and antennae. Venation reduced, with 7 or fewer veins reaching wing margin. Ocelli present or absent.

This is a large and widely distributed group whose members occur in a variety of situations. Larvae of most species are gall makers; some are plant feeders but do not form a gall, some occur in decaying materials, and several are parasitic or pre-daceous. A few species are important crop pests. The Hessian

Fly, Mayetiola destructor (Say), is a serious pest of wheat, and other species attack clovers.

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