---

You are right.
Limonia flavipes is quite similar and it is difficult to distinguish between flavipes and hercegovinae.
I used Peeters and Oosterbroek key:

https://ccw.natur..._2014c.pdf

This point:

The femur of hercegovinae has one dark ring.
The femus of flavipes with faint dark ring.

In this photo there is first hercegovinae then flavipes and then Vienna specimen.
I think there is one dark ring also in Vienna specimen.
But not 100% sure.

BR Esko