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.
Rhopalomyia is a genus of gall midges, insects in the family Cecidomyiidae. There are at least 267 described species in Rhopalomyia. Most species in this genus induce galls on plants in the Asteraceae. This genus has a cosmopolitan distribution. Rhopalomyia was first established by Ewald Heinrich Rübsaamen in 1892.
Catotricha americana is a species of basal gall midges in the family Cecidomyiidae. It is the type species of the genus and has only been confirmed to occur in New Hampshire. This species was first described by American entomologist Ephraim Porter Felt in 1908.
Catotricha is a genus of midges in the family Cecidomyiidae. The five described species in Catotricha are found in the holarctic region. This genus was established by British entomologist Frederick Wallace Edwards in 1938.
Catotrichinae is a subfamily of Cecidomyiidae. Members of this subfamily were formerly included in Lestremiinae and are considered the most primitive members Cecidomyiidae. The larvae feed on fungi. Five genera are currently recognized.
Rhopalomyia solidaginis, the goldenrod bunch gall, is a species of gall midges, insects in the family Cecidomyiidae The galls of this species have the following host species of goldenrods:Solidago altissima, Solidago canadensis, Solidago rugosa They have been found across eastern North American.
Monardia is a genus of wood midges, insects in the family Cecidomyiidae. The 53 described species in Monardia are grouped into three subgenera.
Micromyinae is a subfamily of wood midges, insects in the family Cecidomyiidae. Its members were formerly included in subfamily Lestremiinae. There are at least 55 genera and more than 650 described species in Micromyinae. All species in this subfamily are mycophageous.
Amedia is a genus of wood midges in the family Cecidomyiidae. The only described species - Amedia floridana - is only known from Florida. The genus was established by Mathias Jaschhof in 1997.
Raymond J. Gagné is an American entomologist whose work focuses on gall midges.
Trichoceromyia is a genus of midges in the family Cecidomyiidae. There is one described species in this genus: Trichoceromyia oregonensis. It is only known from Oregon.
Wheeleriola is a genus of midges in the family Cecidomyiidae. The one described species in this genus - Wheeleriola perplexa - is known only from New Zealand.
Eomastix is a genus of midges in the family Cecidomyiidae. Eomastix incerta is the only described species in this genus and is known from Norway and Sweden. The genus was established by Mathias Jaschhof in 2009.
Insulestremia is a genus of midges in the family Cecidomyiidae. There is only one described species in this genus, Insulestremia sinclairi, which is known only from the Galapagos Islands. It was established by Mathias Jaschhof in 2004.
Mesotrichoca is a genus of midges in the family Cecidomyiidae. The one described species in the genus - Mesotrichoca mesozoica - is known only from Siberia from a sediment fossil associated with the Late Jurassic and Lower Cretaceous epochs. This species was placed in Catotricha when it was first described by Russian entomologist Vladimir Grigoryevich Kovalev. This genus was established by Mathias Jaschhof and Catrin Jaschhof in 2008.
Antennardia is a genus of midges in the family Cecidomyiidae. The four described species are found in the Holarctic realm. The genus was first described by Boris Mamaev in 1993, but was subsequently treated as a subgenus of Monardia until being reinstated at the genus level.
Gagnea is a genus of wood midges, insects in the family Cecidomyiidae. The one described species - Gagnea tsutaensis - is known only from Japan. The genus was established by Mathias Jaschhof in 2001 and named after American entomologist Raymond Gagné.
Ladopyris is a genus of wood midges in the family Cecidomyiidae. The one described species - Ladopyris baltica - is known from Sweden and Estonia. The genus was established by Mathias Jaschhof and Catrin Jaschhof in 2020.
Pseudomonardia is a genus of midges in the family Cecidomyiidae. The 15 described species are found in Australasia. The genus was first described by Mathias Jaschhof in 2003.
Pteridomyia is a genus of midges in the family Cecidomyiidae. The four described species are all found in Australasia. The genus was first described by Mathias Jaschhof in 2003.
