Southern Durango Spotted Garter Snake
Thamnophis unilabialis
A montane garter snake from the pine-oak forests of southern Durango, distinguished by a spotted rather than striped dorsal pattern.
- Venomous?
- Mildly venomous
- Adult length
- 0.4-0.6 m (16-24 in)
- Range
- Sierra Madre Occidental, Durango, Mexico
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Overview
This garter snake inhabits cool montane streams and forests within the Sierra Madre Occidental of southern Durango, Mexico. It belongs to a complex of closely related, morphologically similar highland garter snakes found across the western Mexican mountains.
Its specific identity and range have been clarified through taxonomic revisions of the Thamnophis species complex in this region.
How to identify it
- Dorsal pattern of dark spots rather than continuous stripes
- Grayish-olive to brown base coloration
- Keeled scales
- Round pupils
- Distinguished from striped relatives by its spotted dorsal pattern and restricted southern Durango range
Habitat & range
Found along montane streams and in pine-oak forest habitats within the Sierra Madre Occidental of southern Durango.
Behavior, diet & reproduction
Diurnal and semi-aquatic, hunting amphibians and invertebrates near water sources. Mild venom used for subduing prey, not harmful to humans. Gives birth to live young.
Frequently asked questions
How is its pattern different from typical garter snakes?
It shows dark spots rather than the continuous stripes seen in many garter snake species.
Where does it live?
In montane streams and pine-oak forests of southern Durango, Mexico.
Is it venomous to people?
It has only mild venom for prey and is not dangerous to humans.
What does it eat?
Amphibians and invertebrates found near streams.
Southern Durango Spotted Garter Snake guides
In-depth guides for identifying and understanding Southern Durango Spotted Garter Snake.
