This is another wasp that was enjoying the nectar. Large but not quite as large as the red one. The females each dig their own burrow that can be a foot deep in sandy soil. They prey on stinkbugs and leaf-footed bugs to put underground for their larvae to feed on.
Sand Digger Wasp (Bicyrtes quadrifasciatus)
Southern Marsh Fleabane wildflower (Pluchea odorata var. odorata)