Eastern Fence Lizard

Scientific Name: Sceloporus undulatus
Size: 3.9 - 7.2 inches (10 - 18.4 cm)
Status: Species of special concern

Open habitats within forest including rock slides, quarry faces, clear cuts, rocky outcrops along water ways.

Gray to brown lizard with keeled scales giving a rough appearance. Females tend to be gray with wavy black marks on back whereas males tend toward a brownish coloration with blue-green patches down their sides.

Adult Coloration:
  • The dorsal body color is grayish brown to brown.
  • The dorsal pattern is a series of transverse wavy bands that extend across the body. These bands are reddish brown to black with a thin pale posterior border.
  • Older males may not have bands.
  • Similar bands are found the dorsal surface of the tail and legs.
  • A lateral stripe occurred on either side of the body and is similar in color to the dorsal bands.
  • The head is covered with variable dark lines and bars associated with the eyes, temporal region and supralabials.
  • The ventral of females and young (both males and females) is immaculate beige or off-white. Males have a bright blue to blue-green central blotch on the chin, and a large blue to dark blue with a medial black border on either side of the belly.
Adult Characteristics:
  • Medium-sized species.
  • The legs are well-developed.
  • The scales appear matte instead of glossy.
  • The body scales are overlapping, strongly keeled and pointed at the posterior edge.
Juvenile Characteristics:
  • Similar to adults.

Juvenile Gallery:

May be Confused With:
  • Hulse, C. and McCoy C. J. and Ellen Censky ,1998. Amphibians and Reptiles of Pennsylvania and the Northeast. 248-251pp.
  • Tom Diez
  • Bob Ferguson
  • Don Becker (psychoticnature.com)

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