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Common Map Turtle (Graptemys geographica)
Identification: Green, olive, or brown carapace has irregular ("map
like") markings and a low central keel. Plastron light yellow. Narrow yellow
stripes on head and limbs; yellow spot behind eye. Females have big heads, very
Photo © Jim Harding
Adult female carapace length: 6.7 to 10.7 inches (17 to 27.2 cm).
Adult male carapace length: 4 to 6.3 inches (10 to 16 cm).
Habitat: Larger lakes, rivers, oxbow sloughs with ample basking
Habits: Often seen basking on logs, but they dive off at least
disturbance. Females crush snails, other mollusks, and crayfish in strong jaws;
narrow headed males eat smaller mollusks and insects.
Reproduction: Between late May and early July, females bury 6 to 20
oval, soft-shelled eggs near water. Eggs hatch in 65 to 80 days. Hatchlings
either emerge and head for water or stay in nest until spring.
Range and Status: Found in southern and western Lower Peninsula.
Related Documents> Map Turtle Occurrences Map - 111149 bytes