I suppose this is an ordinary Lasioglossum or something close; I'm posting to show behavior. Earlier in the morning, the sun had been out. Then the sky clouded over and the weather became cooler and windy. Around noon, when the photo was taken, this small bee and at least four lookalikes were sleeping soundly in or on radish flowers. The usual manipulations for photographing and measuring left the bee undisturbed. Honeybees, which also visit radish flowers, remained active during this time. Later, when the sun was out, the small bees were gone.