Moved from Blue-Black Spider Wasps.

I have finished reviewing the subgenera and here is a summery list:
(name)-(quality)=(result)
Anopliodes - wing SMC3 wider at the radial than SMC2, marginal cell long = fail
Anoplius - no tarsal rake, wing SMC3 not triangular = fail
Archnophroctonus - rake, hair, clypeus, wing SMC3 = pass
Lophopompilus - hairy head & thorax, arcuate hind margin of the pronotum = fail
Notochares - apical margin of clypeus with a median emargination = fail
Pompilinus - wing SMC3 petiolate = fail

Species & Subspecies level:
After reviewing the species in the subgenera group Archnophroctonus, A. americanus ambiguus is the only one with this exact type of abdominal coloring.

Moved from Spider Wasps.

I have eliminated several other related genera, such as Evagetes, Sericopompilus, Arachnospila, Anoplochares and others, based on wing veins & color, body & leg coloring and shapes, etc.
Also, she fits the description of the females in the genus Anoplius, from the info tab:
"All pompilines have a pocket in the lower rear corner of the third discal cell (the Peterson Guide should have a wing venation diagram). Female Anoplius all have noticeable stiff bristles on the last tergite (pygidium)."
OK, there are six subgenera to consider; so I will move her to genus level for now, until I finish reviewing them all.

Moved from ID Request.