I encountered this critter entirely by accident. I had some Mexican Unicorn Mantids in captivity, bound for a breeding program at the Dallas Zoo, so went out to net some food for them, primarily Snout butterflies. I took one net-load back to the office and noticed what I thought was a Polistes wasp, and tried to figure out how to extract it from the net without getting stung. Then I noticed that it wasn't really a wasp! Took a few photos in the office, a few more outdoors; Charles Bordelon and Ed Knudson dropped by my office a few days later and ID'd the critter from these pics.