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ILLINOIS DEPARTMENT OF NATURAL RESOURCES

J.B. Pritzker, Governor | illinois.gov

Amphibians and Reptiles

Garter Snakes
(Thamnophis sirtalus)

Check out the IDNR’s Wild About Illinois Snakes! website to learn about the common gartersnake (Thamnophis sirtalis) and the plains gartersnake (Thamnophis radix).

Photo: Adele Hodde, IDNR
Common Gartersnake
A common gartersnake.

The Prairie Research Institute’s Illinois Natural History Survey provides species distribution maps and more natural history information about the common gartersnake and the plains gartersnake.

Photo: Scott Ballard
Plains Gartersnake
A plains gartersnake.