Overview
The Western Ribbon Snake (Thamnophis proximus) is an exceptionally sleek, lightning-fast colubrid snake native to the wetlands and river margins of the central United States and Central America. A close relative of the familiar garter snake, it is easily recognized by its remarkably slender, whip-like body, long tapering tail, and bold, radiant orange or golden-yellow dorsal stripe that shines like a ribbon across a velvety black back.
Biology and Physical Characteristics
Thamnophis proximus features a slender, graceful body and a narrow head with large, alert eyes. Its coloration is deep chocolate-brown to jet-black, bisected down the spine by a vivid, unbroken stripe of bright orange, red, or gold, accompanied by pale greenish-white lateral stripes along the third and fourth scale rows. It possesses a pure pale green or cream-colored belly and a distinct vertical white bar directly in front of each eye.
Behavior and Ecology
Semi-aquatic and diurnal, the Western Ribbon Snake spends sunny days hunting along the water’s edge, gliding effortlessly through cattails and climbing agilely into low buttonbush branches overhanging the water. Unlike water snakes that dive to the bottom, it skims lightly across the water’s surface, using quick strikes to snatch tree frogs, cricket frogs, and small minnows.
Conservation and Human Impact
Assessed as Least Concern by the IUCN, the Western Ribbon Snake is common across healthy wetland systems in the Mississippi Valley and Gulf coastal plain. However, the draining and filling of shallow freshwater marshes, urban runoff, and loss of amphibian prey populations represent localized threats.
Interesting Factoid
When startled by a predator along a riverbank, the Western Ribbon Snake doesn’t dive deep into muddy water; it skims across the surface of the pond so quickly that its slender body barely breaks the water’s surface tension.