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Thanks, Henrik!
Comparing other photos, that ID looks good.

I was using M van Veen's online key, and in genus Conops, right at the first step, it was asked for lateral silvery stripe - and I though it is present, just not in the light. But maybe these are just reflection.
Anyways, I went through all species nevertheless and under C. flavipes, it mentions a broad black ring on top half of femur - and this does not seem fitting, as the complete apical half is black in my photo.
That's what confused me