A nest parasite...an invader of other bees nest's ... eggs are laid and the host's young killed and food eaten.  In this case the host if Colletes latitarsis. This rather beat up specimen comes from Blackwater National Wildlife Refuge....paid for with lots of donations to the mosquito population on the refuge.  Photography by Ashleigh Jacobs.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/54563451@N08">USGS Bee Inventory and Monitoring Lab</a> from Beltsville, Maryland, USA
2016-01-17 22:16
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/usgsbiml/24469747075/">Epeolus lectoides, m, side, Dorchester Co, MD_2016-01-07-13.41</a>