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Tribe Asphondyliini

Pin oak gall - Polystepha pilulae Cecidomyiidae, pupa - Asphondylia helianthiglobulus Cecidomyiidae, the 2nd individual - Asphondylia lacinariae - female Gall - Asphondylia Bull's island SC Leaf miner on Quercus species BI11 2016 3 - Polystepha Cecidomyiidae on Jewelweed - Schizomyia impatientis Gaudy Gall Midge - Asphondylia white snakeroot gall  - Schizomyia eupatoriflorae
Classification
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
Remarks
"The Asphondyliini, all gallmakers, form a well-circumscribed, monophyletic group of 505 species, sharing unique characters of the adult postabdomen. These are the distinctive female seventh sternite that is much longer than the preceding sternite; the strongly sclerotized, wide, and laterally notched female eighth tergite; the ventrally lengthened gonocoxites; and the dorsally instead of apically disposed, short and compact gonostyli. The tribe was for a time treated as a supertribe equivalent to the Cecidomyiidi, but Gagné (1994a) placed it in the supertribe Cecidomyiidi because the antennae have 12 flagellomeres that were probably primitively binodal in the male, as they are today in Bruggmannia."(1)
Print References
Tokuda, Makoto. 2012. Biology of Asphondyliini (Diptera: Cecidomyiidae). Entomological Science 15(4):361-383 (online via wiley)