Last summer, as I walked up my gravel driveway to get the mail I noticed a flurry of activity around several very tiny holes on the hard-packed, clay embankment. I had seen the holes before, but assumed that they belonged to ants. In fact, I had photographed several Big-headed Ants (Pheidole sp) in the same spot during the summer before. However, to my delight, after close inspection, I noticed that the insects that I had noticed were actually Lasioglossum sweat bees.