The Crotaphytidae, or collared lizards, are a family of desert-dwelling reptiles native to the Southwestern United States and northern Mexico. They are very fast-moving animals, with long limbs and tails, and are carnivorous, feeding mainly on insects and smaller lizards.
The two genera contain 12 species.
- Femoral pores present
- Interparietal scale small (distinctly smaller than ear opening)
- Never have an enlarged midorsal scale row or fringe
- Never have a divided rostral scale
- No bony spines or projecting ridges on their heads
- No scales projecting over their ears, and no scales forming a prominent fringe on sides of toes as in Phrynosomatidae
Genus Gambelia (leopard lizards)
- Cope's leopard lizard – Gambelia copeii
- Blunt-nosed leopard lizard – Gambelia sila
- Long-nosed leopard lizard – Gambelia wislizenii
Genus Crotaphytus (collared lizards)
- Venerable collared lizard – Crotaphytus antiquus
- Desert collared lizard – Crotaphytus bicinctores
- Common collared lizard – Crotaphytus collaris
- Grismer's collared lizard – Crotaphytus grismeri
- Sonoran collared lizard – Crotaphytus nebrius
- Reticulated collared lizard – Crotaphytus reticulatus
- Baja collared lizard – Crotaphytus vestigium
- Frost, D.E. & Etheridge, R.E. 1989. A Phylogenetic Analysis and Taxonomy of Iguanian Lizards (Reptilia: Squamata) Univ. Kansas Mus. Nat. Hist. Misc. Publ. 81.
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