Cotinis mutabilis? - Cotinis mutabilis
Salero Ranch, 8 mi E of Tubac, 4300 ft elevation, Santa Cruz County, Arizona, USA
July 17, 2015
Size: 2 cm or longer
There were 2 of these beetles digging away at the bark of a Mexican blue oak tree (Quercus oblongifolia). Looks like images of C. mutabilis, but I don't know if there are other lookalikes? Thanks in advance.