Are you familiar with the wasps called Cicada Killers, Sphecius speciosus? They are solitary, nest in the ground and feed their larvae cicadas. Big, robust wasps, they measure about 50 mm (~2 inches) and are equipped with formidable mandibles and impressive stingers. I found this freshly dead one on the ground where it was in the process of being dismantled by some industrious ants which, by the way, are members of the same order as the cicada killer, Hymenoptera. After I snapped a few pictures, I placed the wasp back down on the ground so the ants could continue their work.