Flying around relatively close to sandy/rocky ground at midday. At first I thought it was a large horsefly or perhaps a bumblebee. For a while, I thought it was interested in the Ammophila procera's nest. The wasp seemed to be defending against this creature. It did land quite near the burrow, briefly. Mostly it flew, and lit on the ground or a plant, very briefly. Sorry for the awful light and awful picture, but perhaps someone will recognize it. The overwhelming impression is of black, winged creature. The wings are half clear and half dark, the body short and stout and hairy.