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Small-scaled Lizard - Urosaurus microscutatus

(Van Denburgh, 1894)

(= Baja California Brush Lizard or Black-tailed Brush Lizard - Urosaurus nigricaudus (Cope, 1864))
Click on a picture for a larger view





Full Species Range Map






observation link




Black-tailed Brush Lizard Black-tailed Brush Lizard Black-tailed Brush Lizard
Adult male, Bahia de los Angeles, Baja California
Black-tailed Brush Lizard Black-tailed Brush Lizard Black-tailed Brush Lizard
Adult male, Rancho Verde, Baja California Sur Adult, east of La Paz, Baja California Sur
© Jackson Shedd
Black-tailed Brush Lizard Black-tailed Brush Lizard Black-tailed Brush Lizard
Adult male, Isla San Marcos, Baja California Sur © Stuart Young
Black-tailed Brush Lizard Black-tailed Brush Lizard  
Adult male, Valle de la Trinidad, Baja California © Stuart Young  
Black-tailed Brush Lizard Black-tailed Brush Lizard Black-tailed Brush Lizard
Gravid female, Bahia de Los Angeles, Baja California © Stuart Young Adult male, Isla San José, Baja California Sur © NozoMojo.com
Black-tailed Brush Lizard Black-tailed Brush Lizard Black-tailed Brush Lizard
Adult male, Isla San José, Baja California Sur © NozoMojo.com Adult female, Isla San José, Baja California Sur © NozoMojo.com Adult, Isla San Francisco, Baja California Sur © NozoMojo.com
Black-tailed Brush Lizard  
Adult, Isla San Francisco, Baja California Sur © NozoMojo.com According to Lee Grismer (2002) regarding U. nigricaudus: "...adult males from the adjacent islands of Cayo, San Jose, and San Francisco have extensive orange coloration on the flanks."
     
Habitat
Black-tailed Brush Lizard habitat Black-tailed Brush Lizard habitat Black-tailed Brush Lizard habitat
Habitat, Rancho Verde,
Baja California Sur
Habitat, near Bahia de los Angeles,
Baja California
Habitat, east of La Paz,
Baja California Sur © Jackson Shedd
Red-spotted Toad habitat Carmen Island Zebra-tailed Lizard habitat Carmen Island Zebra-tailed Lizard habitat
Habitat, Baja California Sur
© William Flaxington
Habitat, Isla San José, Baja California Sur. © NozoMojo.com Habitat, Isla San José, Baja California Sur. © NozoMojo.com
Carmen Island Zebra-tailed Lizard habitat Carmen Island Zebra-tailed Lizard habitat Carmen Island Zebra-tailed Lizard habitat
Habitat, Isla San Francisco, Baja California Sur. © NozoMojo.com Habitat, Isla San Francisco, Baja California Sur. © NozoMojo.com Habitat, Isla San José, Baja California Sur. © NozoMojo.com
Carmen Island Zebra-tailed Lizard habitat Carmen Island Zebra-tailed Lizard habitat  
Habitat, Isla San Marcos, Baja California Sur © Stuart Young Habitat, Valle de la Trinidad, Baja California © Stuart Young  
     
Short Videos of this Species
Baja California Brush Lizard Baja California Brush Lizard Baja California Brush Lizard noosing
Some good looks at a camera-tolerant female brush lizard before she bolts, with some impressive tail wagging. A female brush lizard does a few push-up displays and some tail wagging. This video shows how to noose a lizard. Notice the lizard's defensive push-up behavior towards the noose. After a missed attempt, Stuart finally gets the noose around the lizard's neck and pulls him off the rock, being careful not to injure him. It's a colorful male Baja California Brush Lizard. After we admire him, he is put back on his boulder.


References:

Grismer, L. Lee. Amphibians and Reptiles of Baja California, Including Its Pacific Islands and the Islands in the Sea of Cortés. The University of California Press, 2002.

McPeak, Ron H. Amphibians and Reptiles of Baja California. Sea Challengers, 2000.

Samuel M. McGinnis and Robert C. Stebbins. Peterson Field Guide to Western Reptiles & Amphibians. 4th Edition. Houghton Mifflin Harcourt Publishing Company, 2018.

Stebbins, Robert C. A Field Guide to Western Reptiles and Amphibians. 3rd Edition. Houghton Mifflin Company, 2003.

San Diego Natural History Museum










Baja California Reptiles & Amphibians

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