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Common Ribbon Snake vs. Western Ribbon Snake

Both are very slender, long-tailed ribbon snakes with plain pale lips and a white mark in front of the eye. The stripe down the middle of the back settles it: yellow on the Common Ribbon Snake, orange on the Western. Then look at the top of the head: the Western has a bold pale spot, or a pair of spots, there; on the Common it is faint or absent. The Western Ribbon Snake is found in southwestern Indiana.

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Common Ribbon Snake

Thamnophis saurita

Western Ribbon Snake

Thamnophis proximus
Common Ribbon 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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