Early Solitary Bee for ID

Early Solitary Bee for ID

Observation - Early Solitary Bee for ID. Description: Can anyone help with an ID? I watched this small solitary bee feeding on what I think is Arabidopsis thaliana today in my garden. The flowers of this plant (weed) are tiny (only about 5mm across) which helps to give this bee some scale. I don't know where

Can anyone help with an ID? I watched this small solitary bee feeding on what I think is Arabidopsis thaliana today in my garden. The flowers of this plant (weed) are tiny (only about 5mm across) which helps to give this bee some scale. I don't know where to start with this one. Not something I've seen before.