Mexican Yellowbelly Brown Snake
Storeria storerioides
A small, secretive brown snake from southern Mexico distinguished by its pale yellowish underside.
- Venomous?
- Non-venomous
- Adult length
- 20-35 cm (8-14 in)
- Range
- Southern Mexico highlands and lowlands
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Overview
The Mexican yellowbelly brown snake is a small, ground-dwelling colubrid found across parts of southern Mexico, closely related to other brown snakes of the genus Storeria. Its notably pale yellow venter helps distinguish it from similar species in the region.
Like its relatives, it is a secretive, harmless snake that plays an important ecological role controlling small invertebrate populations.
How to identify it
- Light brown to tan dorsal coloring, often with a faint pale stripe and rows of small dark spots
- Pale yellowish belly, giving rise to the common name
- Small head, not distinct from the neck
- Round pupils
- Keeled scales
Habitat & range
Found in forested and disturbed habitats across southern Mexico, often under logs, rocks, and leaf litter in both highland and lowland areas.
Behavior, diet & reproduction
Secretive and largely nocturnal, hiding under cover during the day. Feeds mainly on earthworms and slugs. Non-venomous and harmless, typically relying on stillness or fleeing rather than biting when disturbed. Gives birth to live young.
Frequently asked questions
What makes this snake distinctive?
Its pale yellowish belly, which contrasts with its light brown back.
Is it venomous?
No, it is completely non-venomous and harmless to humans.
What does it eat?
Mostly earthworms and slugs found in moist soil and leaf litter.
Where is it found?
Across forested and disturbed habitats in southern Mexico.
Mexican Yellowbelly Brown Snake guides
In-depth guides for identifying and understanding Mexican Yellowbelly Brown Snake.
