Hi! Love the site and I enjoy looking at all the different species of wasps. This little guy (about 1" or so) showed up in my back yard about a week ago along with about 4 million of his brothers and sisters. They seem to be dwelling in the ground. The closest thing I’ve identified them with is the Cukoo Wasp. Any ideas? Thanks.
This is a Digger Wasp, Scolia dubia. Adult wasps prey on the grubs of June Beetles as a food source for the larval wasps.