Crotaphytus collaris auriceps
A blue-bodied, yellow-headed subspecies that I've seen in southeastern Utah.
An adult male in Grand County, Utah, 12 Jun 2006.
A subadult male in Grand County, Utah, 13 Jun 2006.
Another subadult male in Grand County, Utah, 15 Jun 2006.
An adult male in Grand County, Utah, 15 Jun 2006.