Appearance
For terms see Morphology of DipteraWing length 9 ·5–14 mm. Pregenital segment yellow. Legs yellowish, base of femorae black. Tergites 2-4 dark yellow side-stripes widen towards tergite margins.
See references for determination
Distribution
Palearctic Fennoscandia South to the Pyrenees. Ireland East through North Europe and Central Europe into Russia and the Caucasus and on to Siberia, the Russian Far East and Japan.Behavior
Habitat: wet moorland, valley bog, fen and ''Alnus'', ''Salix'' carr.Flies May to October.
References:
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