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Banded Watersnake vs. Plain-bellied Watersnake

The owner's pair: their ranges overlap across the southeast (records shared). A: Pale, with dark wavy crossbars or squares in the Banded Watersnake; plain orange-red to yellow, no marks in the Plain-bellied Watersnake. B: Wide dark crossbands in the Banded Watersnake; plain brown, grey or olive (adults) in the Plain-bellied Watersnake. C: Crossbands all the way down in the Banded Watersnake; blotched: dark back blotches alternating with side blotches, not crossbands; the belly already plain in the Plain-bellied Watersnake. D: A dark stripe from the eye to the corner of the jaw in the Banded Watersnake; no eye stripe; the side of the head plain, the lips pale in the Plain-bellied Watersnake.

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Banded Watersnake

Nerodia fasciata

Plain-bellied Watersnake

Nerodia erythrogaster
Banded Watersnake vs. Plain-bellied Watersnake: comparison sheet with the differences marked

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

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