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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Gnats, Gall Midges, and March Flies (Bibionomorpha) » Fungus Gnats and Gall Midges (Sciaroidea) » Gall Midges and Wood Midges (Cecidomyiidae) » Gall Midges (Cecidomyiinae) » Cecidomyiidi » Asphondyliini » Bud gall midges (Asphondylia) » sunflower feeding species (Asphondylia sunflower feeding species) » Asphondylia helianthiglobulus
Photo#298725
Gall Midge - Asphondylia helianthiglobulus
Copyright © 2009 John Pearson

Gall Midge - Asphondylia helianthiglobulus
Ackworth, Warren County, Iowa, USA
July 4, 2009
Size: 1 cm diameter X 2 cm tall
Cluster of stem galls on Jerusalem artichoke (Helianthus tuberosus) in grassy old field.

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Gall Midge - Asphondylia helianthiglobulus Gall Midge - Asphondylia helianthiglobulus Gall Midge - Asphondylia helianthiglobulus
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Contributed by John Pearson on 4 July, 2009 - 11:01am
Last updated 9 November, 2009 - 10:16pm

Some kind of fly...
A midge, Asphondylia helianthiglobulus, causes globular, succulent galls, 5-15 mm in diameter, along the side or at the apex of stems of various Helianthus spp. In addition, Felt (1940) attributes "ovate stem swellings, frequently roughened, diameter 3/4 inch, on H. tuberosus" to "Several Diptera and possibly a Cecid."
… Charley Eiseman, 4 July, 2009 - 11:26am login or register to post comments

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