- Northern Alligator Lizard
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Northern Alligator Lizard 
Scientific classification Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Squamata Family: Anguidae Genus: Elgaria Species: E. coerulea Binomial name Elgaria coerulea
(Wiegmann, 1828)The Northern Alligator Lizard (Elgaria coerulea) is a medium-sized lizard that occurs on the North American west coast.
Contents
Taxonomy
This lizard was formerly known under the scientific name of Gerrhonotus coeruleus (Wiegmann, 1828), but is nowadays classed as Elgaria coerulea. There are four subspecies:
- E.c. coerulea Wiegmann 1828: San Francisco Alligator Lizard
- E.c. palmeri Stejneger 1893: Sierra Alligator Lizard
- E.c. principis Baird and Girard 1852: Northwestern Alligator Lizard
- E.c. shastensis Fitch 1934: Shasta Alligator Lizard
The subspecies E.c. principis is one of five species of lizards in Canada.
Description
Northern Alligator Lizards are medium-sized slender lizards. Adults reach a snout-to-vent length of about 10 cm (4 inches) and a total length of roughly 25 cm (10 in). They have a distinct skin fold on their sides, separating the keeled scales on the back from the smooth ventral scales. They are brownish in color and often have dark blotches that sometimes blend together into bands. The belly is light gray. The eyes are dark. Their diet includes crickets, mealworms, and moths.
Distribution
Ranges of
E.c. coerulea,
E.c. palmeri,
E.c. principis, and
E.c. shastensisThe Northern Alligator Lizard occurs along the Pacific Coast and in the Rocky Mountains from southern British Columbia through Washington, northern Idaho and western Montana south through Oregon to the coastal range and the Sierra Nevada in central California. As the map shows, the different subspecies have quite different ranges, with E.c. principis being the most widely distributed, whereas the E.c. coerulea subspecies occurs only around the San Francisco area.
The species is widely distributed along the Pacific coast and can be found from sea level up to elevation of about 3350 m (11000 ft). It is found in a variety of forested habitats and montane chaparral.
See also
External links
- Images from Californiaherps.com
- Description and range map from the California Department of Fish and Game.
- Taxonomical Information
- Description, photos, and information from the British Columbia Ministry of Environment
Categories:- Anguids
- Fauna of Canada
- Reptiles of the United States
- Fauna of the Sierra Nevada (U.S.)
- Fauna of the California chaparral and woodlands
- Reptiles of North America
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