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Lined Snake vs. Plains Garter Snake

Both are striped prairie snakes. The Lined Snake is small, grey-brown or olive, with a pale middle stripe, side stripes on scale rows 2 and 3, a narrow head barely wider than the neck, plain lips, and two rows of bold black half-moons down its white belly. The Plains Garter Snake is bigger, with a bright orange or yellow middle stripe, side stripes higher on rows 3 and 4, black bars on the lips, a double row of black spots between the stripes, and a plain or dotted belly.

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Lined Snake

Tropidoclonion lineatum

Plains Garter Snake

Thamnophis radix
Lined 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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