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Family Cecidomyiidae - Gall Midges and Wood Midges

More goldenrod gall fauna - Asteromyia carbonifera Tiny Pale Thing Unid Leafminer WWsc9 - Asteromyia carbonifera St. Andrews leaf gall on Quercus margaretta SA_G59 2016 2 - Polystepha ceanothus bud gall midge - Asphondylia ceanothi galls on box elder - Contarinia negundinis Mosquito? - Asphondylia - female East Lake leaf miner on Baccharis halimifolia D3881 2022 4 - Asteromyia
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Nematocera" (Non-Brachycera))
Infraorder Bibionomorpha (Gnats, Gall Midges, and March Flies)
Superfamily Sciaroidea (Fungus Gnats and Gall Midges)
Family Cecidomyiidae (Gall Midges and Wood Midges)
Synonyms and other taxonomic changes
taxonomy here is adopted from Gagné & Jaschhof 2021 (1) who have expanded the family from the traditional 2-3 subfamilies to six
Explanation of Names
Cecidomyiidae Newman 1835
Well over 1000 described species in ~190 genera in our area(2), ~6300 species in ~760 genera worldwide(3)(4); actual numbers are expected to be much higher: the estimated Canadian fauna alone contains ~1600 species(5)
1-5 mm (some up to 8 mm)(2)
Minute, delicate flies with long legs and usually relatively long antennae, and with reduced wing venation(6)
Most are gall makers. Others feed on plants. A few live on decaying matter, some are predators, a few, parasitic; some live as ant/termite inquilines(2)
Life Cycle
in several genera, larvae reproduce (paedogenesis); this seems to be restricted to fungus-feeding forms(2)
the Hessian fly (Mayetiola destructor) is an important pest of wheat; another pest is the midge of red clover Dasineura leguminicola. Among the ones that feed on aphids Aphidoletes aphidimyza is used as a biocontrol. Some species may reproduce without reaching the adult stage (paedogenesis)(7)
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