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Checkered Garter Snake vs. Plains Garter Snake

Out of state: their ranges overlap in Kansas, Oklahoma and New Mexico. A: A pale crescent and black blotch behind the corner of the mouth in the Checkered Garter Snake; no crescent; black bars on the lips in the Plains Garter Snake. B: Yellowish to white in the Checkered Garter Snake; bright orange or yellow-orange in the Plains Garter Snake.

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Checkered Garter Snake

Thamnophis marcianus

Plains Garter Snake

Thamnophis radix
Checkered Garter Snake vs. Plains Garter 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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