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Discussion, insects and people from the 2018 BugGuide Gathering in Virginia, July 27-29

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Genus Asphondylia

Gall close-up - Asphondylia auripila Rudbeckia gall - Asphondylia rudbeckiaeconspicua Unidentified Gall on Rudbeckia laciniata (Yellow Coneflower) - Asphondylia rudbeckiaeconspicua Cecidomyiidae, Goldenrod gall 3X - Asphondylia solidaginis Asphondylia rudbeckiaeconspicua Cecidomyiidae on Green-headed coneflower - Asphondylia rudbeckiaeconspicua Adult male, specimen 1, dorsal close-up - Asphondylia neomexicana - male Asphondylia antennariae from Antennaria plantaginifolia - Asphondylia antennariae
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)
Subfamily Cecidomyiinae (Gall Midges)
Supertribe Cecidomyiidi
Tribe Asphondyliini
Genus Asphondylia
Synonyms and other taxonomic changes
Cecidomyia (Asphondylia) Loew 1850
Nearctica lists 85 species.
"Asphondylia species mostly form galls on flowers or flower buds and prevent fruiting in a great many families of plants, but some form complex galls on other plant parts. All are associated with symbiotic fungi. Some species are of economic importance, e.g., A. websteri and A. gennadii and include those that affect buds and have alternate or multiple hosts. Some species alternate generations between two parts of a single plant species, e.g., A. rudbeckiaeconspicua, that forms a winter crown gall at the base of the plant and a summer flower bud gall. Many species groups within this genus are the result of radiation on particular plant genera, e.g. Atriplex and Larrea, and are closely host specific."(1)