Sandstone Night Lizard vs. Granite Night Lizard

The Granite Night Lizard reaches the desert edge of the Peninsular Ranges near Anza-Borrego. A: Only in sandstone and siltstone cracks at the Truckhaven Rocks and clay hills of Anza-Borrego in the Sandstone Night Lizard; granite boulders and exfoliating slabs throughout the Peninsular Ranges in the Granite Night Lizard. B: Light grey to tan, densely stippled with fine, small dark brown flecks (like porous sandstone) in the Sandstone Night Lizard; pale grey to yellowish cream with big, distinct, blocky dark brown or black blotches (like speckled granite) in the Granite Night Lizard. C: Very slender and long; short legs for its length; a narrow head in the Sandstone Night Lizard; robust and flat; long, strong legs for spanning cracks; a broad, flat head in the Granite Night Lizard. The rock tells them apart in the field: sandstone (Sandstone) vs granite (Granite).

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

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