Sumichrast's Garter Snake
Thamnophis sumichrasti
A Mexican highland garter snake named for the naturalist Francois Sumichrast, found near streams and wet meadows.
- Venomous?
- Mildly venomous
- Adult length
- 0.5-0.8 m (1.6-2.6 ft)
- Range
- Central and southern Mexican highlands
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Overview
Sumichrast's garter snake occupies cool, humid highland habitats across parts of central and southern Mexico. It belongs to a diverse radiation of Mexican Thamnophis species adapted to montane wetlands and streams.
Its taxonomy has been revised over the years, with some populations previously grouped under related garter snake species.
How to identify it
- Olive-brown to grayish body with three pale longitudinal stripes typical of garter snakes
- Keeled dorsal scales
- Round pupils
- Moderate, slender build
- Distinguished from close relatives largely by range and fine scale counts
Habitat & range
Found in wet meadows, streamsides, and marshy areas within highland regions of central and southern Mexico.
Behavior, diet & reproduction
Active during the day, hunting amphibians, fish, and invertebrates in and near water. Mild venom assists prey handling but is not a concern for humans. Bears live young.
Frequently asked questions
Who was this species named after?
It is named for the 19th-century naturalist Francois Sumichrast, who collected extensively in Mexico.
Is it dangerous?
No, it is only mildly venomous to small prey and harmless to humans.
What kind of habitat does it use?
Wet meadows, streamsides, and marshy highland habitats.
What does it eat?
Amphibians, fish, and invertebrates.
Sumichrast's Garter Snake guides
In-depth guides for identifying and understanding Sumichrast's Garter Snake.
