I’ve attached an image of a bee I encountered in northern Georgia next to a lake. It appeared to be excavating a hole in a sandy wall, nearby there were hundreds of these holes, I assume also by these bees. I looked on your site and thought for a second it could be a plasterer bee. Any idea?
We agree that this is a Plasterer Bee in the family Colletidae. According to the Audubon Guide: “The Plasterer Bee lines its underground chambers with a thin, delicate, cellophane-like coating of saliva, suggesting its common name.”