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Hi,
I found these mines in one and the same plant (Arctium lappa).
The Mines at photo 1 and 2 might be caused by Phytomyza lappae? For picture 3 I am insecure. Maybe even another species?
Data:
25.08.2020
ruderal area near Furth im Wald, Bavaria, Germany

Greetings
Ingrid