Urosaurus bicarinatus
—
Tropical Tree Lizard
Subspecies I've seen:
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U. b. tuberculatus
Sonoran Tree Lizard
Urosaurus bicarinatus tuberculatus
—
Sonoran Tree Lizard

This species can be distinguished from the other Urosaurus species in the area by the parallel rows of extra-large scales down its back.
Online references:
- Urosaurus bicarinatus account on The Reptile Database
Printed references:
- Rorabaugh, J.C., Lemos-Espinal, J.A. 2016. A Field Guide to the Amphibians and Reptiles of Sonora, Mexico