Granite Spiny Lizard vs. Western Fence Lizard

Their ranges overlap (checked against both species' records). The Granite Spiny Lizard has a big, very spiny lizard with a broad black collar on the shoulder and a blue-green or purple sheen; the Western Fence Lizard has large, keeled, pointed back scales and yellow-orange on the rear of the thighs. A: Granite Spiny Lizard, a broad black collar on the shoulder, in front of the front leg; Western Fence Lizard, no collar and no dark blotch behind the front leg; males have a blue throat patch. B: Granite Spiny Lizard, big, keeled, very spiny scales; Western Fence Lizard, large, keeled, pointed scales: spiny. C: Granite Spiny Lizard, dark, flecked blue-green, a purple-brown band down the back; Western Fence Lizard, wavy dark bars down each side of the back.

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

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