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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 » Cecidomyiini » Contarinia » Contarinia citrina
Photo#735408
Basswood (Tilia americana) stem galls? - Contarinia citrina
Copyright © 2013 Tony Palmer

Basswood (Tilia americana) stem galls? - Contarinia citrina
Omaha, Douglas County, Nebraska, USA
January 4, 2013
Size: 4-5mm
The galls are just below the buds of the twig. Each gall contained 1-6 small chambers of 3mm or less. All were empty with no signs of emergence from the galls that I could see. Any ideas what might have caused this? Closest I can find is Linden Twig Gall Gnat(Cecidomyia citrina).

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Basswood (Tilia americana) stem galls? - Contarinia citrina Basswood (Tilia americana) stem galls? - Contarinia citrina Basswood (Tilia americana) stem galls? - Contarinia citrina
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Contributed by Tony Palmer on 5 January, 2013 - 2:06pm
Last updated 13 February, 2013 - 5:15pm

Moved
Moved from ID Request.
You're probably right. There's an agromyzid that makes oval twig galls on basswood, but these don't look like them to me.
… Charley Eiseman, 13 February, 2013 - 5:15pm login or register to post comments

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