Crotaphytus is a genus of lizards, commonly known as collared lizards, in the family Crotaphytidae. Member species are small to medium-sized predators indigenous to the American southwest, Baja peninsula, and Mexico. Including the tail, they can be as small as or as long as, and are characterized by distinct bands of black or brown around the neck, to which their common names refer.
The following species and subspecies are recognized as being valid.[1]
| Image | Scientific name | Common name | Distribution |
|---|---|---|---|
| Crotaphytus antiquus | venerable collared lizard | Sierra San Lorenzo, Sierra Texas, and Sierra Solis in extreme southwestern Coahuila state, Mexico | |
| Crotaphytus bicinctores | Great Basin collared lizard or desert collared lizard | Western United States | |
| Crotaphytus collaris | common collared lizard | Mexico and the south-central United States (Arizona, Arkansas, Colorado, Kansas, Missouri, New Mexico, Oklahoma, and Texas) | |
| Crotaphytus dickersonae | Sonoran collared lizard | Mexico | |
| Crotaphytus grismeri | Grismer's collared lizard | Baja California, Mexico | |
| Crotaphytus insularis | eastern collared lizard | Mexico | |
| Crotaphytus nebrius | Sonoran collared lizard | U.S. state of Arizona and the Mexican state of Sonora | |
| Crotaphytus reticulatus | reticulated collared lizard | US state of Texas, Mexico (Coahuila, Nuevo León, and Tamaulipas) | |
| Crotaphytus vestigium | Baja California collared lizard | California (United States) and Baja California (Mexico) | |
A binomial authority in parentheses or a trinomial authority in parentheses indicates that the species or subspecies was originally described in a genus other than Crotaphytus.
In 1969, Oklahoma designated its first state reptile when it chose the collared lizard.