Utah State University Extension
Carpenter bees are large, hairy bees in the genus Xylocopa and order Hymenoptera. There are over 500 species of carpenter bees distributed worldwide. In Utah, we have two common species, X. californica and X. tabaniformis. Carpenter bees in Utah are most likely found in Washington, Kane and Garfield counties, and are rarely found in Salt Lake and Utah counties.
Hodgson, Erin W. and Trina, Jessie, "Carpenter Bees" (2008). All Current Publications. Paper 870.