Osmia sanrafaelae

Osmia sanrafaelae is a megachilid bee first identified in Utah's San Rafael Desert. The species' range is limited to the American intermountain West. O. sanrafaelae is a solitary nester that inhabits a wide range of ecosystems: pinyon-juniper scrubland, washes, sand dunes, and desert flatlands.

Osmia sanrafaelae measure 6-11 mm in length.