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Chihuahuan Spotted Whiptail vs. Six-lined Racerunner

They meet in the grassland of New Mexico and western Texas, just east of Arizona (out-of-state look-alike). A: Many pale spots between and on the stripes in the Chihuahuan Spotted Whiptail; no spots: clean pale stripes on dark fields in the Six-lined Racerunner. B: Grey-brown with bright yellow spots on the hind legs in the Chihuahuan Spotted Whiptail; a green or blue wash on the head, throat and sides in the Six-lined Racerunner.

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Chihuahuan Spotted Whiptail

Aspidoscelis exsanguis

Six-lined Racerunner

Aspidoscelis sexlineatus
Chihuahuan Spotted Whiptail vs. Six-lined Racerunner: comparison sheet with the differences marked

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

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