Endemic Animals of Illinois








Thamnophis sirtalis semifasciatus
Thamnophis sirtalis semifasciatus
Thamnophis sirtalis semifasciatus, the Chicago garter snake, is a subspecies of the common garter snake native to the Chicago, United States, region. It was described by Edward Drinker Cope in 1892, and can be found in the vicinity of rural waterways in northeastern Illinois, such as Piscasaw Creek in Boone County and McHenry County, Illinois.
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Thamnophis sirtalis semifasciatus