---

Hello Juergen,
To distinguish between Leucozona lucorum and L. inopinata, you have to look at the side margin of the 4th abdominal segment, called tergite 4!
In L. lucorum tergite 4 has predominantly white hairs, with some black hairs in the middle of the tergite. In L. inopinata tergite 4 has dark hairs, also along the side margin. The other difference lays in the percentage of very small hairs in a certain cell in the wing, but without magnification difficult to see!
So, having said this, it it clear to see from the upper picture that this is a male of Leucozona inopinata!
Greetings,