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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#592674
Gall on a giant sunflower stem - Asphondylia helianthiglobulus
Copyright © 2011 Dan Mullen

Gall on a giant sunflower stem - Asphondylia helianthiglobulus
Milwaukee, Milwaukee County, Wisconsin, USA
August 25, 2011
I found this Gall on a giant sunflower stem Helianthus giganteus. Possibly Lasioptera weldi?
tag · login or register to post comments
Contributed by Daniel Mullen on 6 November, 2011 - 11:27am
Last updated 1 February, 2012 - 9:35am

Moved
Moved from Unidentified Galls.
Lasioptera weldi is an obsolete name for Neolasioptera thurstoni, which makes simple stem swellings rather than succulent galls on one side of the stem.
… Charley Eiseman, 1 February, 2012 - 9:35am login or register to post comments

Moved for expert attention
Moved from ID Request.
… Ken Wolgemuth, 21 November, 2011 - 5:19pm login or register to post comments

--
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… Daniel Mullen, 9 November, 2011 - 10:46pm login or register to post comments

This looks vaguely similar

but it's hairy, unlike your gall. Another gall, same species:
… John van der Linden, 9 November, 2011 - 8:37pm login or register to post comments

 
Hairiness
Giant Sunflowers often have hairless stems:
http://wisplants.uwsp.edu/scripts/detail.asp?SpCode=HELGIG

Jerusalem-artichokes have hairy stems:
http://wisplants.uwsp.edu/scripts/detail.asp?SpCode=HELTUB
… Daniel Mullen, 9 November, 2011 - 10:48pm login or register to post comments

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