Ornate tree lizard (male)

A small (up to 59 mm or 2.3" from snout to vent), slim, gray, gray-brown, or tan lizard with an ornate pattern of thin, dark lines on top of the head. Body markings are variable but usually consist of black or dark gray-brown, irregularly shaped blotches. Some specimens have lengthwise striations and some are plain. On the back are two parallel, lengthwise strips of enlarged, keeled scales separated at the mid-dorsum by a strip of small granular scales. The remainder of the dorsal scales are small and granular. The scales on the tail and limbs are enlarged and keeled. The scales on the belly are smooth and flat. A fold of skin runs along each lower side of the body. Males have two large, blue patches on the belly and a blue, blue-green, green, yellow, or orange throat. In females belly patches are lacking and the throat is yellow, yellow-green, or orange. Its twin strips of enlarged, keeled scales on the back and its shorter tail distinguish this lizard from the similar Long-tailed Brush Lizard. (information from http://www.reptilesofaz.org/ )