The 2 Types of Garter Snakes in Maine! (w/ pics)

Almost everyone can identify a “garter snake” in Maine!

Common Garter Snakes in Maine

 

But here’s the problem:

 

There are multiple species and sub-species of garter snakes! Therefore, figuring out the identity of the SPECIFIC snake you are observing can be challenging. This is especially true since many of them have similar appearances and behaviors.

 

Today, you are going to learn about 2 garter snake species in Maine!

  • *Just a quick note – to be officially considered a garter snake, the species must be in the genus Thamnophis*

 


#1. Eastern Ribbon Snake

  • Thamnophis saurita

Types of Garter Snakes found in Maine

Identifying Characteristics:

  • Adults typically range from 18 to 26 inches in length. A slender snake with a long tail!
  • Coloration is brown to nearly black with three bright yellow to cream stripes; one down the back and one down each side.
  • Snout and entire head are brownish, lips and underneath head are white.

 

Did you see a slender garter snake in Maine with a long tail?

 

If so, it was probably an Eastern Ribbon Snake!

eastern ribbon snake range map

This species is semi-aquatic and RARELY found far from a source of water. Look for them in a wide variety of habitats, including marshes, grassy floodplains, streams, ditches with grass, wet areas in meadows, and woodlands adjacent to wetlands. Ribbon snakes are even found in suburban areas that match these conditions.

 

You might spot these snakes basking on branches of trees, bushes, or grasses overhanging the water. They typically hunt in the water and prey on amphibians, fish, and invertebrates.

 

If disturbed, these snakes will quickly flee into grass or brushy areas. If caught, they are not aggressive and rarely bite. But you can expect them to defecate and spray musk onto your hands. In the wild, Eastern Ribbon Snakes rely on blending into their surroundings to get away from predators.

 


#2. Maritime Garter Snake

  • Thamnophis sirtalis pallidulus


Garter Snakes species that live in Maine
Identifying Characteristics:

  • Adults can reach 40 inches in length!
  • Coloration varies but is typically dark green, brown, or black. The stripes that are common on other garter snake species are missing or poorly developed.
  • Features a yellowish chin, upper jaw, and belly. Some individuals may display a checkered or speckled patterning on the back.
  • Subspecies of the Common Garter Snake.

 

Maritime Garter Snakes adapt well to humans in Maine!

 

They are habitat generalists and can be found almost everywhere! Look for them in forests, shrublands, fields, rocky areas, wetlands, shorelines, and urban and agricultural areas. They’re commonly spotted when moving rocks or logs, where they hide underneath for protection and thermoregulation.

maritime garter snake range map

To survive the harsh northern winters in Maine, these garter snakes hibernate below the frost line. They’ll utilize mammal and crayfish burrows, rock crevices, underground cavities, ant mounds, and manmade structures such as foundations. Interestingly, they often hibernate communally with other snakes!

 

This species isn’t considered threatened and can live to be TWENTY years old! They’re relatively common and can tolerate moderately disturbed human habitats well. However, populations near roads frequently have high road mortality rates.

 


Do you need additional help identifying garter snakes?

Try this field guide!

 


Which of these garter snakes have you seen in Maine?

 

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