Cecidomyiidae is a family of flies known as gall midges or gall gnats. As the name implies, the larvae of most gall midges feed within plant tissue, creating abnormal plant growths called galls. Cecidomyiidae are very fragile small insects usually only 2–3 mm (0.079–0.118 in) in length; many are less than 1 mm (0.039 in) long. They are characterised by hairy wings, unusual in the order Diptera, and have long antennae. Some Cecidomyiids are also known for the strange phenomenon of paedogenesis in which the larval stage reproduces without maturing first. In some species, the daughter larvae consume the mother, while in others, reproduction occurs later on in the egg or pupa.
Paradiplosis tumifex, the balsam gall midge, is a species of gall midges, insects in the family Cecidomyiidae.
Celticecis pubescens, the hackberry pubescent gall midge, is a species of gall midges in the family Cecidomyiidae.
Contarinia coloradensis is a species of gall midges in the family Cecidomyiidae.
Neolasioptera nodulosa, the nodular stem gall midge, is a species of gall midges, insects in the family Cecidomyiidae.
Resseliella clavula, the dogwood club gall midge, is a species of gall midges in the family Cecidomyiidae.
Contarinia negundinis, known generally as boxelder gall midge, is a species of gall midges in the family Cecidomyiidae. Other common names include the boxelder bud gall midge and boxelder leaf gall midge. It is the only North American species that enters diapause during the pupal stage of development.
Lasioptera solidaginis is a species of gall midges in the family Cecidomyiidae.
Contarinia citrina is a species of gall midge in the family Cecidomyiidae.
Dasineura gleditchiae, commonly known as the honeylocust podgall midge, is a species of gall midge in the family Cecidomyiidae. Native to North America, it is an invasive species in parts of Europe. The honeylocust podgall midge is a pest of honey locust, forming galls on the foliage.
Obolodiplosis is a genus of gall midges. It is monotypic, being represented by the single species Obolodiplosis robiniae, commonly known as the locust gall midge.
Lasioptera vitis is a species of gall midges in the family Cecidomyiidae.
Contarinia cerasiserotinae is a species of gall midge in the family Cecidomyiidae.
Sackenomyia commota is a species of gall midges, insects in the family Cecidomyiidae.
Caryomyia persicoides, the hickory peach-haired gall midge, is a species of gall midges in the family Cecidomyiidae.
Olpodiplosis is a genus of gall midges, insects in the family Cecidomyiidae. There is at least one described species in Olpodiplosis, O. helianthi.
Resseliella liriodendri is a species of gall midges in the family Cecidomyiidae.
Asteromyia gutierreziae is a species of gall midges in the family Cecidomyiidae.
Polystepha pilulae, the oak leaf gall midge, is a species of gall midge in the family Cecidomyiidae. It is found in eastern North America.
Geromyia penniseti, the millet grain midge, is a species of gall midge in the family Cecidomyiidae. It is found in Africa and South Asia. During the rainy season, it feeds on the developing grains of pearl millet plants.
