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.
Alycaulini is a tribe of gall midges, insects in the family Cecidomyiidae. There are about 20 genera and at least 200 described species in Alycaulini.
Contarinia coloradensis is a species of gall midges in the family Cecidomyiidae.
Asteromyia is a genus of gall midges in the family Cecidomyiidae. There are about nine described species in Asteromyia.
Craneiobia is a genus of gall midges in the family Cecidomyiidae. There are at least two described species in Craneiobia. They create tube-like galls on leaves of Cornus plants.
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 is a genus of gall midges in the family Cecidomyiidae. There are at least 140 described species in Lasioptera.
Contarinia citrina is a species of gall midge in the family Cecidomyiidae.
Apagodiplosis is a genus of gall midges in the family Cecidomyiidae. There is one described species in Apagodiplosis, A. papyriferae.
Contarinia cerasiserotinae is a species of gall midge in the family Cecidomyiidae.
Sackenomyia is a genus of gall midges, insects in the family Cecidomyiidae. There are about five described species in Sackenomyia.
Resseliella liriodendri is a species of gall midges in the family Cecidomyiidae.
Prodiplosis is a genus of gall midges, insects in the family Cecidomyiidae. There are about 11 described species in Prodiplosis.
Pilodiplosis is a genus of gall midges, insects in the family Cecidomyiidae. There is at least one described species in Pilodiplosis, P. helianthibulla.
Acericecis is a genus of gall midges in the family Cecidomyiidae. There are at least three described species in Acericecis.
Stephomyia is a genus of gall midges in the family Cecidomyiidae. There are about seven described species in Stephomyia.
Polystepha pilulae, the oak leaf gall midge, is a species of gall midge in the family Cecidomyiidae. It is found in eastern North America.
Monarthropalpus is a genus of gall midges in the family Cecidomyiidae. There is at least one described species in Monarthropalpus, M. flavus.
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.
Stenodiplosis sorghicola, the sorghum midge, is a species of gall midge in the family Cecidomyiidae. It is a pest of millets. The species is native to Africa and is also found in India. During the rainy season, it feeds on the developing grains of pearl millet plants.
