Leafcutter Bee or Mason Bee (two photos)
Genus Hoplitis

Osmiini mason bee
I found this handsome leaf-cutter/mason bee on some roadside flowers near Lytle Ranch, Utah. 
Carol Davis, 5-12-2013

mason bee
When the desert is in bloom it is an ideal time to look for bees and wasps.  The Bees Needs Blog
has some good information on this genus Hoplitis.  Carol Davis, 5-12-2013

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