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Common Garter Snake vs. Western Ribbon Snake

A Western Ribbon Snake is very slender and long-tailed, with plain pale lips, a white mark right in front of the eye and an orange middle stripe; its side stripe sits on scale rows 3 and 4. A Common Garter Snake is stockier, with dark bars on the lip scales, a yellowish middle stripe, and its side stripe low, on rows 2 and 3. The Western Ribbon Snake is found in southwestern Indiana.

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Common Garter Snake

Thamnophis sirtalis

Western Ribbon Snake

Thamnophis proximus
Common Garter Snake vs. Western Ribbon Snake: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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