Sceloporus magister

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Sceloporus magister
Sceloporus magister Phoenix.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Reptilia
Order: Squamata
Suborder: Lacertilia
Family: Phrynosomatidae
Genus: Sceloporus
Species: S. magister
Binomial name
Sceloporus magister
Hallowell, 1854[1]

Sceloporus magister, also known as the desert spiny lizard, is a reptile of the family Phrynosomatidae, which is native to the Chihuahuan Desert and the Sonoran Desert.

Geographic range[edit]

In the United States it is found in the states of Arizona, California, Texas, New Mexico, Nevada, and Utah. It is also found in the Mexican states of Sonora, Baja California, Chihuahua, Coahuila, and Durango.[2]


Description[edit]

An adult male desert spiny lizard usually have conspicuous blue/violet patches on the belly and throat, and a green/blue color on their tails and sides (“Lizards “28. Science Reference Center).. Females and juveniles have large combined dark spots on their back and belly areas, and the blue/violet and green/blue coloring is absent. Both sexes have brownish/yellow triangular spots on their shoulders. A female Desert Spiny Lizard will lay anywhere from 4 to 24 eggs during the summertime (“Lizards “28. Science Reference Center). A fully grown desert spiny lizard will reach a body length of up to 5.6 inches. Besides their bright colors, the desert spiny lizard changes to darker colors during the winter to allow them to absorb more heat from the sun, and become lighter during the summer to reflect the sun's radiation. It is frequently seen doing push-ups, pushing its body up and down, as a form of territorial display.

Distribution[edit]

The Desert Spiny Lizard ranges across the deserts of southwestern Arizona and the northeastern plateaus at elevations ranging from near sea level along the Colorado River to about about 5,000'.

Behavior[edit]

Like many desert lizards, desert spiny lizards adjust their internal temperature by changing color so they are darker during cool times, which allows them to absorb more heat from the sun, and become lighter during warm times so they reflect more solar radiation. The desert spiny lizard also uses camouflage so it is not so easily seen by predators.

Usually, during the morning hours, it will be out basking in the sun on rocks or any hard surface that is in direct sunlight, but like many desert reptiles and other desert creatures, the desert spiny lizard will seek shelter in burrows during the hottest part of the day in the summertime, as burrows are much cooler than temperatures on the ground's surface.

Vivid ventral coloring of male Sceloporus magister

Habitat[edit]

Biotic communities including Sonoran Desertscrub, Great Basin Desertscrub, Semidesert Grassland, Interior Chaparral, and woodlands are home to this lizard. It is usually encountered on lower slopes, bajadas, plains, and low valleys, often in the branches of trees or in the vicinity of ground cover such as wood piles, rock piles, and packrat nests.


Diet[edit]

The Desert Spiny Lizard feeds on a variety of insects including ants, beetles, and caterpillars. It also feeds on spiders, centipedes, small lizards, and some plant material.

Reproduction[edit]

It is often encountered in male-female pairs. Mating takes place in spring and summer and one or two clutches of eggs are laid in spring and summer. Clutch size ranges from 2 to 12 eggs. Hatchlings may appear as early as late May but usually begin to emerge in July.

Subspecies[edit]

Five subspecies of Sceloporus magister, including the nominate race, are recognized.

  • S. m. bimaculosus Phelan & Brattstrom, 1955
  • S. m. cephaloflavus W. Tanner, 1955
  • S. m. magister Hallowell, 1854
  • S. m. transversus Phelan & Brattstrom, 1955
  • S. m. uniformis Phelan & Brattstrom, 1955[3]

One former subspecies (Sceloporus magister monserratensis Van Denburgh & Slevin, 1921) was elevated to a species (Sceloporus monserratensis Van Denburgh & Slevin, 1921) by herpetologist Ernest A. Liner in 1994.

References[edit]

  1. ^ Dahms Tierleben. www.dahmstierleben.de.
  2. ^ The Reptile Database. www.reptile-database.org.
  3. ^ The Reptile Database. www.reptile-database.org.
  • Hallowell, E. 1854. Description of new reptiles from California. Proc. Acad. Nat. Sci. Phila. 7[1854]:91-97.
  • Phelan, R.L. and B.H. Brattstrom. 1955. Geographic variation in Sceloporus magister. Herpetologica 11(1):1-14.
  • Tanner, W.W. 1955. A new Sceloporus magister from eastern Utah. Great Basin Naturalist 15:32-34.

“Desert Spiny Lizard.” Arizona-Sonora Desert Museum. Craig Ivanyi. Web.23 Mar. 2015 "Lizards." Reptiles & Amphibians Of The West (1974): 28. Science Reference Center. Web. 23 Mar. 2015. Brennan, Thomas C. "Desert Spiny Lizard (Sceloporus Magister) - Reptiles of Arizona." Desert Spiny Lizard (Sceloporus Magister) - Reptiles of Arizona. N.p., 2008. Web. 13 May 2015.

External links[edit]