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Western Fence Lizard, Spiny Lizard
Phrynosomatidae
Sceloporus
Type: Lizard

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Phrynosomatidae
Spiny-Horned Lizards
Iguania
Iguania-like Lizards
Squamata
Scaled Reptiles
Eureptilia
True Reptiles
Reptilia
Reptiles
Tetrapoda
Four Legs
Gnathostomata
Jaws
Vertebrata
Vertibrates
Chordata
Chords
Deuterostomia
Mouth Second
Bilateria
Two-Way Symmetry
Eumetazoa
True Higher Animals
Animalia
Animals
Eukaryota
Eukaryota
Cells with a Nucleus


Phrynosomatidae Family
Sceloporus Genus


Description

estern fence lizards measure 5.7-8.9 cm (snout-vent length) and a total length of about 21 cm. They are brown to black in color (the brown may be sandy or greenish), but their most distinguishing characteristic is their bright blue belly and the ventral side of the limbs are yellow. These lizards also have a blue patch on their throat. This bright coloration is faint or absent in both females and juveniles. The scales of S. occidentalis are sharply keeled and between the interparietal and rear of thighs there are 35-57 scales.
Many other lizards have similar bright blue coloring. The Eastern Fence Lizard, S. undulatus, instead of having one large pouch on its throat, has two small patches. The Sagebrush Lizard, S. graciosus, lacks yellow limbs and has smaller dorsal scales. S. occidentalis also resembles the Side-blotched Lizard, Uta stansburiana. However, the axilla of U. stansburiana usually has a black spot behind it and they have a complete gular fold .

General information about Western Fence Lizard, Spiny Lizard :

It is also known as the Blue-belly. Not all fence lizards have a "blue belly". Smaller sized, immature fence lizards have sand colored bellies until they mature. Though they do not have colored bellies, they are still referred to as a 'blue belly'.
It is a member of the genus Sceloporus, and therefore is a spiny lizard.



Lizard - Gardening_Helper
Lizard - Gardening_Helper - May 14, 2009

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