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Hi Piluca!
I am grateful for your answer, thank you!
Exactly, the infuscation of crossveins is the only bothering aspect of these flies!! Nevertheless, I literally can't think of anything else than hyrcanus, because the only other sp. in Turkey (apart from A. nitidulus) is A. araxis, which is clearly an eastern species, not known from nearby Turkey. So I assume that the infuscation of crossveins is a trait of either eastern A. hyrcanus, or a specificity of the Rhodian population of that sp.B)

Again, I greatly appreciate your contribution, it gives me some comfort! :)

All the best,
Henrik