Cecidomyiidae - Information from Wikipedia on this family of flies, commonly known as gall midges or gall gnats. Although tiny, many are economically significant pests of crops. Album: Cecidomyiidae - Photographs of several flies in this family. Family Cecidomyiidae - Photographs of flies in this family found in North America, provided by BugGuide. Rhopalomyia californica - Photograph of galls on a coyote bush produced by the larvae of this bud gall midge. Rhopalomyia baccharis - Photograph of galls on a coyote bush twig produced by the larvae of the twisted stem gall midge. Dasineura oxycoccana: Blueberry Gall Midge - Photographs and a description of this species, its distribution, life history, plant damage and management. Feltiella acarisuga - Photographs and a description of this predatory gall midge, its distribution, life cycle and use as a biological control of the twospotted spider mite. Prodiplosis longifila: Citrus Gall Midge - Photographs and a description of this species, its distribution, host plants, damage and management. Mayetiola destructor: Hessian Fly - Photograph of this insect, with information on its hosts plants and symptoms. Macrodiplosis quercusoruca: Vein Pocket Gall - Photographs of the gall caused by this midge, with information on its hosts, symptoms, life cycle and description. Contarinia sorghicola: Sorghum Midge - Photograph of this insect and information on its hosts, symptoms, life cycle and description.