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Thanks, Valery. From White's RES key, I was not expecting such strong marking in a1+cua2. To get to leontodontis, it says that cells a2 and a1+cua2 are usually hyaline, at most with a mark adjacent to the cup extension, but not meeting A2. In this fly, the dark marks clearly reach A2.
I am tending towards T. matricariae.