Scientific name: Urosaurus microscutatus

Common name: Small-Scaled Lizard

Size: 1.5-2 in (3.7-5 cm)

Distinguishing characters: A small species; two rows of dark brown or black blotches on dorsum and a brown, grey, or sooty background color; dorsal scales granular; enlarged scales along midline of body; prominent gular fold on throat; loose folds along sides of body; long tail.

Juveniles: Similar to adults; pale yellow-orange throat patch.

Dimorphism: Male has orange-centered blue throat patch and blue patches on venter; paired, enlarged postanal scales; females smaller, lacking blue ventral patches and enlarged postanal scales.

Similar species: Sceloporus occidentalis, Sceloporus orcutti: Have keeled, pointed dorsal scales; lack gular fold. Uta stansburiana: Lacks blue ventral patches; has bluish-black spot on sides behind forelimbs.

Additional notes: Occurs in small, localized populations in extreme southern portion of study area only. Usually associated with rocky hillsides or dry riparian woodlands. Frequently perches on trees. Apparently, this species may be synonymous with Urosaurus nigricaudus from Baja California.

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