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No doubt, this is a Calliphoridae in the genus Rhynchomyia.
I know, it doesn't look like Calliphora, but neither does Stomorhina.
Rhynchomyia is more close to the latter.
The Rhiniini are abundant in the tropics and there are several species in the Mediterrenean. Difficult (for me) to tell the species.
the black marks on the head are distinctive


Theo Zeegers