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Desert Spiny Lizard

Sceloporus magister, I think, from the description and photos on Arizona PARC. It says that some males can have a blue-green side marking on the belly, so this may also be the lizard I’ve been seeing scuttling under a tree as the walk back rejoins the wash.

I also saw a small, long, lizard with spots on the side and stripes down the back and a faint gloss to the skin; from the website, I think it’s a Tiger Whiptail, Aspidoscelis tigris.

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About Bill McCallum

I was born in Australia and came to the United States to pursue a Ph. D. in mathematics at Harvard University, met my wife, and never went back. I am a professor at the University of Arizona, working in number theory and mathematics education.


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