about the size or a little smaller than Osmia pumila
Northeast. Newly established Old World bee. It has been collected in MA, NY, & NJ and is suspected to have spread to neighboring states.
They frequent Centaurea and other Asteraceae.
Recorded on Centaurea biebersteinii
. The Hosts section on its Discover Life species page
lists known floral associations based on specimen records and images.
They nest in hollow stems and build cottony partitions between cells.