native to Europe, adventive in NA (ne. US & se. Canada; probably introduced with imported elms)(1); recently established in the Pacific Northwest as well(2) [also known on the Pacific coast of Russia(3)]
parthenogenetic (males unknown in NA, rare in Europe), univoltine; adults from mid-May to early June; larvae mine elm leaves until mid-July, when they drop to the ground, where they form thin cocoons in the soil and overwinter(1)
Contributed by Charley Eiseman on 16 February, 2012 - 9:22am Additional contributions by v belov Last updated 29 November, 2013 - 5:55pm
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