Side-blotched Lizard
Uta stansburiana
Photo taken at McDowell Mountain Park, Maricopa Co., AZ. Dec 1, 2002.
This is really the only reptile that is likely to be active during the winter months in the Sonoran Desert. They emerge from their underground hideouts when the sun is warm. Note the dark splotch just behind the first pair of legs and the just barely visible blue-green coloration under the chin.