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Sabino Canyon Volunteer Naturalists

Sabino Canyon Volunteer Naturalists

Appreciate the natural wonders of Sabino Canyon

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Madrean Alligator Lizard

Elgaria kingii

  • Content: Bob and Peggy Wenrick
  • Photo(s): Bob and Peggy Wenrick

The Madrean Alligator lizard is active during the day and evening.

Madrean Alligator Lizard
Photo by Bob & Peggy Wenrick

The Madrean Alligator Lizard is a large (to 5.5 inches), shiny, long-bodied lizard with relatively small limbs and a long, thick tail. The back and belly are armored with stiff, rectangular, plate-like scales. A soft fold of skin on each side allows the body to expand for breathing. Coloration is gray or tan with chocolate or reddish brown crossbars that have dark posterior edges. Often has crisp white markings on the sides of the face.

Young have crisp, nearly black banding on the body and tail and dark coloration on the limbs, feet, and lower sides.

They occupy low valleys, rolling foothills, and steep mountain slopes in communities ranging from Semidesert Grassland through Petran Montane Conifer Forest.

The Madrean Alligator lizard is active during the day and evening and is a ground dweller often found foraging in leaf litter or under rock piles, rat nests, fallen logs, or dead plants. They seem to be most abundant in wooded canyons or along drainages.

The Madrean Alligator lizard eats insects, spiders, and scorpions. Presumably a fall breeder and laying up to 15 eggs in late spring or early summer. (from Amphibians and Reptiles in Arizona, by Thomas Brennan and Andrew Holycross.)

This photograph was taken in May 2010 at lower Sabino.

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Sabino Canyon Volunteer Naturalists
5700 N Sabino Canyon Road
Tucson, AZ 85750

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