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  in length. References 

sanrafaelae
Hymenoptera of North America
Endemic insects of the United States
Insects described in 1985