''Sceloporus asper'', the asperous spiny lizard, is a species of lizard in the family

Phrynosomatidae The Phrynosomatidae are a diverse family of lizards, sometimes classified as a subfamily (Phrynosomatinae), found from Panama to the extreme south of Canada. Many members of the group are adapted to life in hot, sandy deserts, although the spin ...

. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to Mexico.

References

Sceloporus Endemic reptiles of Mexico Reptiles described in 1897 Taxa named by George Albert Boulenger {{lizard-stub