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Checkered Garter Snake vs. Two-striped Garter Snake

Their records meet in one square of southern California. A: A clear yellowish stripe down the middle of the back in the Checkered Garter Snake; no stripe down the middle of the back in the Two-striped Garter Snake. B: A pale crescent and black blotch in the Checkered Garter Snake; no crescent in the Two-striped Garter Snake.

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Checkered Garter Snake

Thamnophis marcianus

Two-striped Garter Snake

Thamnophis hammondii
Checkered Garter Snake vs. Two-striped 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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