Lacertas of the United States
Lacertids are characterized by slender round bodies, well developed legs, and long tails. The back is covered with hexagonal scales and the belly scales are large and rectangular. The large head shields usually contain bony plates (osteoderms) and are not fused to the skull. Most species have movable eyelids. Terrestrial species are variously colored, while arboreal species are green. Males have slightly larger heads and may be differently colored from the females.
Lacertids are daytime hunters of insects, spiders, scorpions, and small vertebrate. All lacertids are egg layers, save one north Eurasian species, Lacerta vivipara.
There are species two of Lacertas in the U.S.
Introduced into Topeka, Kansas. Native to Mediterranean Europe.
Introduced into Philadelphia, PA and Long Island, NY. Native to Italy and the Mediterranean islands, also Spain and Turkey.