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Location: Stockholm, Sweden (23 May, 2008)
Bodylength: 5-6 mm
Found on Garlic Mustard (Alliaria petiolata)


Larger view: http://www.flickr.com/photos/johnhallmen/2517479584/sizes/o/

Thanks!

//John

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Cecidomyiidae (gall midge).

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Many thanks Paul!

//John

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Divided tergites suggest Karshomyia. Revised for Europe in 1998 with the description of a new species from Norway.

Mamaev, B.M. and M.G. Krivosheina. 1998. [On] the taxonomy of the gall midges of the genus Karschomyia Felt, 1908 (Diptera: Cecidomyiidae) with description of 11 new species. Russian Entomological Journal 6: 75-81.

Felt meant to name the genus after Karsch. The originally published spelling omitted the 'c'. He added it later, contrary to the rules, confusing entomologists for the next century.

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Thanks for that emendation update. I corrected it for the Dutch list.