This is a cleptoparasitic bee in the genus Triepeolus…I found her sitting on a pollen bag early one morning. It was a cool, wet morning, and I think she was just trying to dry off. But she was posed so beautifully…
These bees have white “appressed” hairs rather than pigments in their cuticle.
I think they are beautiful bees, even though their purpose is a little sinister.