Classification
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Thamnophis - North American Garter & Ribbon Snakes
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Thamnophis sirtalis - Common Gartersnake
- T. s. annectens - Texas Gartersnake
- T. s. concinnus - Red-Spotted Gartersnake
- T. s. dorsalis - New Mexico Gartersnake
- T. s. fitchi - Valley Gartersnake
- T. s. infernalis - California Red-sided Gartersnake
- T. s. pallidulus - Maritime Gartersnake
- T. s. parietalis - Red-sided Gartersnake
- T. s. pickeringii - Puget Sound Gartersnake
- T. s. semifasciatus - Chicago Gartersnake
- T. s. similis - Blue-striped Gartersnake
- T. s. sirtalis - Eastern Gartersnake
- T. s. tetrataenia - San Francisco Gartersnake
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Thamnophis sirtalis - Common Gartersnake
