The dunes sagebrush lizard, Sceloporus arenicolus, (formerly known as the sand dune lizard and the dunes-sagebrush lizard, Sceloporus graciosus arenicolus, a subspecies of sagebrush lizard), is an insectivorous spiny lizard species which only occurs in the shinnery oak sand dune systems of extreme southeast New Mexico and only four counties in adjacent Texas. Sceloporus arenicolus has the second-smallest range of all lizards in the United States.