Plains Garter Snake

Thamnophis radix

Reptiles & Amphibians109.5 cmIn the app

Either brown or black in color with an orangish stripe running down the top of the back and two yellowish stripes running down either side of body. Venter is grayish and…

Plains Garter Snake illustration

How to identify

Either brown or black in color with an orangish stripe running down the top of the back and two yellowish stripes running down either side of body. Venter is grayish and displays dark blotches on sides. Females give birth in late summer and early fall; clutches range from 5-40 young.

Range

Central Canada and United States from southern Alberta, Saskatchewan, and Manitoba through northeastern New Mexico and northern Texas.

Habitat

Usually found near water sources including marshes, lakes, creeks, and rivers in farmland, prairie, and pinyon-juniper areas. Hibernates in burrows, anthills, and sometimes underwater.

Variations

Male tails are about 27.8% of total body length while females have tails that are 27.5% of their body length. In addition, males exhibit tubercles on chin shields.

Similar species

Name and etymology

Radix: Latin for root.

At a glance

Size

109.5 cm

Range

Central Canada and United States from southern Alberta, Saskatchewan, and Manitoba through northeastern New Mexico and northe…

Habitat

Usually found near water sources including marshes, lakes, creeks, and rivers in farmland, prairie, and pinyon-juniper areas.…

Range map

Range map for Plains Garter Snake

Approximate range. © Mapbox © OpenStreetMap

Sources & further reading