Hi Jim. Robber flies are very cool - I wish we had more of them up this way as they make great macro subjects. This one is a bumble bee mimic and appears to be in the Genus
Laphria (possibly
Laphria grossa). I like the natural lighting and you have good sharpness around the head where you most need it. Like the others, I would wish for more DOF. As you were using a tripod, you might have increased your ISO to 400 which would have given you 2 more f/stops of DOF - just something to keep in mind the next time out.

I hope to see more shots of these guys.