Cylindrical petiole & ventral 1st abdominal segment Gs1 not expanded or produced forward.
NV not represented yet. Sweeping foliage around an old cottonwood tree. I didn't find the ant nest important to the larvae of these parasites.
Several pics to show important characteristics.
not reaching tegula. Flagellum
funicle segments 1-5 branched (4 obviously, and the 5th just barely a bump, but the key counts it). Ventral 1st abdominal segment
Gs1 not expanded or produced forward. Petiole cylindrical, not globose.
apex rounded, not produced into paired spines. Occiput
is flat not concave.