Snake Identifier
Black Swampsnake (Liodytes pygaea)
Black swampsnake (Liodytes pygaea) by Jake Schneider, via Wikimedia Commons, licensed under CC BY-SA 4.0
Colubrids

Black Swampsnake

Liodytes pygaea

A small, glossy black wetland snake with a bright red-orange belly, found in dense marsh vegetation of the southeastern coastal plain.

Venomous?
Non-venomous
Adult length
25-38 cm (10-15 in)
Range
Southeastern United States coastal plain, from Virginia to Louisiana

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Overview

The Black Swampsnake is a small, secretive aquatic colubrid found in marshes and swamps across the southeastern coastal plain of the United States. Its uniformly glossy black upperside contrasts strikingly with a vivid red-orange belly, making it one of the more visually distinctive small wetland snakes when observed closely.

This harmless species is almost never far from water, sheltering among dense aquatic vegetation and organic debris, and feeding on small aquatic invertebrates and amphibians.

How to identify it

  • Small, slender body with smooth, glossy scales
  • Uniform glossy black to dark brown dorsal coloration with no pattern
  • Bright red, orange, or reddish-pink belly, sometimes with dark spotting along the edges
  • Small head not distinct from the neck; round pupils
  • Distinguished from other small dark wetland snakes by its unpatterned glossy black back and vivid red-orange belly

Habitat & range

Inhabits marshes, swamps, wet meadows, and heavily vegetated pond and ditch edges throughout the southeastern coastal plain from Virginia to Louisiana. Often found beneath mats of floating vegetation, sphagnum moss, or organic debris in shallow water.

Behavior, diet & reproduction

Secretive and highly aquatic, rarely seen in the open and usually found by searching under floating vegetation or debris. Feeds on small invertebrates such as worms and leeches, as well as tadpoles and small salamanders. Gives birth to live young in summer.

Frequently asked questions

Is the Black Swampsnake venomous?

No, it is completely harmless and non-venomous.

What does it look like?

It has a glossy, unpatterned black back and a bright red-orange belly.

Where is it found?

In marshes and swamps of the southeastern U.S. coastal plain from Virginia to Louisiana.

What does it eat?

Small invertebrates like worms and leeches, plus tadpoles and small salamanders.