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Hello Ectemnius,
thank you. for defining the genus as Epistophe.
You are right, on the second pictures is another fly. After posting I noticed that I sent pictures of two different individuals. I thought that they belong to the same species, and did not notice the difference in the angle of the eyes. Here is an additional image of the fly on the 2nd picture for comparison. Is species determination possible?

Greetings,

Marion