What kind of bee is this?
I live in the Lehigh Valley pf Pennsylvania. Today I saw a bee in my garden that I had not noticed before.
It is about the size of a honeybee, but a bit stockier. It is yellow and black striped, like a yellowjacket. It hovers quite well, and its flight style reminds me of a hoverfly. Several times I saw it watch another bee in mid air, then fly right into it, as if attacking.
Any ideas what this is?