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Four-lined Skink vs. Prairie Skink

They meet on the coastal plain and in east-central Texas (the Southern Prairie Skink). A: No dark stripes between the pale side lines (black in the young, brown in adults) in the Four-lined Skink; narrow dark stripes on the back as well as the side lines in the Prairie Skink. Prairie Skink young have black bodies and blue tails, like young Four-lined Skinks.

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Four-lined Skink

Plestiodon tetragrammus

Prairie Skink

Plestiodon septentrionalis
Four-lined Skink vs. Prairie Skink: comparison sheet with the differences marked

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

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