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Colorado Checkered Whiptail vs. Plateau Fence Lizard

Their records overlap in southeastern Colorado, the whiptail's native range (checked); in Washington the whiptail is an introduced colony near Moses Lake. A: Tiny grain-like scales in the Colorado Checkered Whiptail; large, keeled, spiny scales in the Plateau Fence Lizard. B: Six pale stripes; pale spots and bars in the dark fields between them: checkered in the Colorado Checkered Whiptail; dark chevrons between pale stripes in the Plateau Fence Lizard.

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Colorado Checkered Whiptail

Aspidoscelis neotesselatus

Plateau Fence Lizard

Sceloporus tristichus
Colorado Checkered Whiptail vs. Plateau Fence Lizard: comparison sheet with the differences marked

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

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