length: females 8-14 mm; males 9-18 mm
Scopa lacking (as in all Melectini); terga with medially broken bands of appressed white (rarely pale brown) pubescence.
See also Internet Reference (DiscoverLife)
From B.C. (Canada) south to CA, east to IL; also Mexico (Baja California)
The Hosts section on its Discover Life species page
lists known associations based on specimen records and images.