They are gregarious and nest in groups. There is one female per nest. Digger Bees Also known as flower-loving bees, these robust bees usually go unnoticed as they feed by collecting nectar and pollen from many flowers in gardens and meadows. When solitary nests are built in certain areas, they become a nuisance to homeowners. Covered densely with yellow and black hairs, these digger bees resemble carpenter bees.
Wings are clear but smokey at the tip.
The forewings have a small spot on the leading edge with the hind wings having a jugal lobe at the wing base. Sand and clay banks lacking ground cover are attractive nest sites. The nest entrance is hidden by a down-slanted chimney composed of mud. Adult bees place honey and pollen in each cell to provide food for the developing larva after egg hatch. Larvae overwinter in the brood cell, pupate and adults emerge in late spring.