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HI Sckel. This is a Braconidae in the subfamily Microgasterinae. I don't know the genera very well here, but I will pass it on to some braconid folks who should be able to help you. The wasps in this subfamily often spin up cocoons around their host.
Yep, I would say definitely a Crabronidae.
I know this is difficult to see and explain, but the pronotum (in your picture the thin cream band along the front of the thorax) in Crabronidae (and Sphecids and bees) is different from the other aculeate wasps.
In the former, the pronotum viewed from above is transverse, narrow, and widely separated from the tegula (a little pads at the base of the wing); in lateral view there is a nice, rounded lobe (cream in your specimen). In other stinging wasps (most notably the social and paper wasps) the pronotum in dorsal view curves back meet the tegula. Sorry if this is a bit too technical - but it is the best way to separate these groups out.