I'm not very familiar with the genus, I never seem to find it. Nor have I read (or been able to understand) Mingo's keys, but have you tried running it through the key in "Moczar 1964 Über die Notozus-Arten Ungarns"? (can send you it as a pdf if you want)
In short:
The metanotal projection should have parallel sided lateral edges as seen
hereThe apical plate of the last tergite almost heart shaped, the medial incision not reaching halfway up to the dorsal edge of the plate as the third picture
here