Bog Turtle

Scientific Name: Glyptemys muhlenbergii
Size: 3-4 inches (7.6-10 cm) in length
Status: Endangered Species

Bogs and wet meadows with tussock grass.

Small aquatic species. The upper shell of this small turtle is brown to black and may occasionally have faint light colored markings on it. The shell is rough and appears to have been carved. Behind the eyes is a large yellow or orange marking on either side of the head. The rest of it's skin is dark with speckling of red, orange or yellow.

Adult Coloration:
  • The carapace is brown to brownish black. Each scute may have a light center or radiating lines.
  • The plastron is brown to brownish black and may have some light marks.
  • The lower marginals and bridge are the same color as the carapace.
  • The skin of the head, neck, legs, and tail are brown and may be mottled with red dorsally; and mottled with a lighter orange, red or yellow ventrally.
  • The head has two large yellowish orange to reddish blotches; located on each side of the head, behind the eyes and below the tympanum.
Adult Characteristics:
  • Small aquatic species.
  • Profile View – The carapace is domed with a low middorsal keel.
  • Above View – The carapace is elongate and fairly straight sided.
  • The carapace surface has deeply etched growth rings that give the shell a rough appearance.
  • The posterior marginals flare slightly and are smooth or weakly serrated.
  • The plastron is large and the bridge is broad.
  • The legs are stout and well-developed.
  • The head and neck are moderate in size.
  • The stout is not prominent.
  • The upper jaw is medially notched.
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. 215-219pp.
  • Ernst, Carl H. and Lovich, Jeffrey E., and Barbour, Roger W. ,1994. Turtles of the United States and Canada. 213-221pp.
  • Bob Bull
  • Brandon Ruhe
  • Kyle Loucks

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