| Crotaphytidae Smith & Brodie, 1982 |
| Crotaphytus Holbrook, 1842 |
| Crotaphytus antiquus Axtell & Webb, 1995 |
| Crotaphytus collaris (Say, 1822) |
| Crotaphytus collaris subsp. baileyi Stejneger, 1890 |
| Crotaphytus collaris subsp. deckersonae Schmidt, 1922 |
| Crotaphytus collaris subsp. insularis (Van Denburgh & Slevin, 1921) |
| Crotaphytus collaris subsp. nebrius Axtell & Montanucci, 1977 |
| Crotaphytus copeii Yarrow, 1882 |
| Crotaphytus dickersonae Schmidt, 1922 |
| Crotaphytus dorsalis Baird & Girard, 1852 |
| Crotaphytus fasciatus Mocquard, 1899 |
| Crotaphytus fasciolatus Mocquard, 1903 |
| Crotaphytus gambelii Baird & Girard, 1852 |
| Crotaphytus grismeri McGuire, 1994 |
| Crotaphytus insularis Van Denburgh & Slevin, 1921 |
| Crotaphytus insularis subsp. insularis Van Denburgh & Slevin, 1921 |
| Crotaphytus insularis subsp. vestigium Smith & Tanner, 1972 |
| Crotaphytus nebrius Axtell & Montanucci, 1977 |
| Crotaphytus reticulatus Baird, 1858 |