Sceloporus jarrovii

Sceloporus jarrovii, also known commonly as the mountain spiny lizard and Yarrow's spiny lizard, is a species of lizard in the family Phrynosomatidae. The species is native to the southwestern United States and northern Mexico. There are two recognized subspecies.
Etymology.
The specific name, "jarrovii", is in honor of Henry Crécy Yarrow (November 19, 1840 – July 2, 1929), an American ornithologist, herpetologist, naturalist, and surgeon.
Geographic range.
"S. j. jarowii" is found in the United States in the states of Arizona and New Mexico, and it is found in Mexico in the states of Chihuahua, Durango, Sonora, northern Tamaulipas, and western Zacatecas. The subspecies "S. j. lineolateralis" is found only in Mexico in the states of Durango and Zacatecas).
Habitat.
The preferred natural habitats of "S. jarrovii" are forest and rocky areas.
Description.
"S. jarrovii" grows to a snout-to-vent length of with keeled scales and a crosshatch-patterned torso. Its coloration includes tints of pink, green, blue, and copper. The top of the head is dark gray. Males have a blue throat and a blue belly. A complete black collar with a white inferior border distinguishes this lizard from similar species.
Reproduction.
"S. jarrovii" is viviparous.
Subspecies.
Two subspecies of "S. jarrovii" are recognized as being valid, including the nominotypical subspecies.