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Checkered Gartersnake2 locationsReptile/Amphibian
.: gummo :.
Apr 10 2016
Tres Rios Wetlands
.: gummo :.
Apr 10 2016
Tres Rios Wetlands
TypeReptile/Amphibian
FamilyColubridae - Snakes - non-venomous
Images Bing, Google

Thamnophis marcianus

A medium-sized (up to 1,088 mm or 43" in total length) light olive-green, tan, or yellow-green snake with a pale stripe down the middle of the back. An additional light stripe runs along each lower side on the third scale row (counting up from the belly). The dark areas between the stripes are marked by rows of dark, alternating, rectangular blotches that give the snake a checkerboard appearance. the dark blotches often intrude into the mid-dorsal stripe. The head is plain olive gray and the neck is marked with two large, dark-edged, olive gray blotches. A white crescent shape extends up from the neck onto each side of the head just in front of the neck blotches. Each eye is sandwiched between two vertical, white bars with black edges. The underside is light cream, yellow, or gray. The pupils are round and the dorsal scales are keeled.

This snake is found across the valleys of southeastern Arizona. It also follows agriculture and riparian corridors into portions of south central Arizona around Casa Grande, Phoenix, Fort McDowell, Buckeye, and Gila Bend. A population that might be isolated occurs in agricultural areas south of Yuma along the Colorado River. In Arizona it ranges in elevation from sea level to over 5,000'.

(source: http://www.reptilesofaz.org)
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