With wings, about 1 inch long. Narrow waist, bulbous shiny abdomen, appeared to have stinger. Last photo has my shoe in it for size reference.
Walking across blacktop road, meandering a bit. Did not try to fly when disturbed, perhaps newly emerged and wings not yet functional?
There were 5 individuals spaced a few yards apart on this road.
Observation for the plant being harvested: https://www.inaturalist.org/observations/213450424