---

Hi Matej, I've checked it with:
Families of Flies with Three Pulvilli (Zeegers, Schulten)
and
Key to the horse flies fauna of Croatia (Diptera, Tabanidae)
STJEPAN KRČMAR, DAVORKA K. HACKENBERGER and BRANIMIR K. HACKENBERGER

I think it's P. aprica - the male of P. graeca has a "very narrow median black line on the posterior margin of the (first 3 or 4) tergites" - which should be visible on your images.