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Red-backed Whiptail vs. Giant Spotted Whiptail

Close relatives (once one species, Canyon Spotted Whiptail); the Red-backed is in western Pima County, the Giant Spotted further east. A: Orange only on top of the lower back; head and neck not orange in the Red-backed Whiptail; head and neck reddish-orange in the Giant Spotted Whiptail. B: Tan with small yellow spots near the base in the Red-backed Whiptail; reddish-orange in the Giant Spotted Whiptail.

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Red-backed Whiptail

Aspidoscelis xanthonotus

Giant Spotted Whiptail

Aspidoscelis stictogrammus
Red-backed Whiptail vs. Giant Spotted Whiptail: comparison sheet with the differences marked

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

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