The Ohio data I have is pretty strong for both A. architectus and A. nigrellus. The data I have for A. caerulescens is somewhat weaker, but that may be due to some of the specimens having to be left unidentified (even Townes remarked that sometimes females of this group cannot be confidently separated). Data indicates there are several generations per year (maybe two or three in MA, depending on environmental factors). There is essentially complete overlap in the flight periods of these three wasps, all three of which should be present in your area. Adults are on the wing from late May (usually males) all the way through early October(straggling females), but they are most numerous late June through September. That is a typical flight period for woodland or woodland edge species that have several generations per year (also like many species of Priocnemis (Priocnemis). Keep up the good work, especially on video. The raw genetics isn't the only thing that's useful, behavior may be yet another important tool that will help delimit the species of this difficult group.

Well, in the east you can always narrow it down to a.c.n. or architectus, caerulescens, or nigrellus. Just for the record (and for fun, since we'll never know for sure), I'm leaning toward Auplopus architectus since the side view photo shows a tremendous amount of long, erect pubescence.

if it means anything to you, the spider is a jumping spider. Appears to be Phidippus or Eris.

All three species commonly take Salticids, but they aren't very specific when it comes to genera. What is also unfortunate is that it will probably take genetic work to separate these wasps consistently...likely one of the many things I wish to accomplish in graduate school.

James Pitts identified this as A. architectus.