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8-10mm long.
On hazel nut leaf (Corylus sp.), in mixed wooded roadside, in a patch of sunlight.
Seen together with https://diptera.i..._id=103148
19 Sept 2021 @ 16:28pm
Flensburg, N.Germany @ 54.759799, 9.423421

Many Thanks in advance.
Ray

All my identified insect observations will be catalogued on Observation.org:-