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Marbled Whiptail vs. Chihuahuan Spotted Whiptail

Both are big whiptails of southern New Mexico (records share 29 one-degree squares). A: A black net or marbling; no clear stripes in the Marbled Whiptail; six faint stripes with many pale spots over them in the Chihuahuan Spotted Whiptail. B: Grey or tan, marbled with black like the back; no yellow spots in the Marbled Whiptail; pale spots turn bright yellow on the hind legs and lower back in the Chihuahuan Spotted Whiptail.

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Marbled Whiptail

Aspidoscelis marmoratus

Chihuahuan Spotted Whiptail

Aspidoscelis exsanguis
Marbled Whiptail vs. Chihuahuan 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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