Mexican Brown Snake

Mexican Brown Snake

Storeria storerioides

Silhouette: Alex Slavenko · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered Endemic
Daily sighting probability ~30% · Possible
at Reserva de la Biosfera Mariposa Monarca
13 Verified sightings at Reserva de la Biosfera Mariposa Monarca From 2019 to 2026
13 Verified sightings across 1 park From 2019 to 2026
October Best month highest sighting rate
🌙 Nocturnal When it's spotted during nighttime hours (6pm–6am)

About the Mexican Brown Snake

Storeria storerioides, the Mexican brown snake, is a species of nonvenomous snake in the family Colubridae. It is endemic to Mexico, and is mainly found in the western part of the Trans-Mexican Volcanic Belt. Oak and pine forests make up the snake's habitat.

The snake was first described under the in 1866 by Edward Drinker Cope, who placed it in the genus Tropidoclonium, known today as Tropidoclonion. Samuel Garman moved the snake to its own genus, Storeria, in 1883. The name storerioides, meaning "similar" or "like", refers to the species similarity to other species in its genus.

The snake is endemic to Mexico. It's mostly found in the western part of Trans-Mexican Volcanic Belt, and from there its range stretches northwards along the Sierra Madre Occidental, The snake inhabits pine and oak forests, and is usually found underneath logs or plant litter. having been found as far north as Madera, Chihuahua. The snake is also known to be found in Coahuila, near the border with Zacatecas.

Storeria storerioides have somewhat slender bodies. Most 'individuals are 26–30 centimetres (10–12 in) long, with the maximum recorded length... Wikipedia →

Closest Relatives at Reserva de la Biosfera Mariposa Monarca

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Reserva de la Biosfera Mariposa Monarca 🇲🇽 Mexico
~30%

More parks will be added in future updates.

Quick answers

What are the chances of seeing a Mexican Brown Snake in Reserva de la Biosfera Mariposa Monarca?

About 30% of wildlife watchers report a Mexican Brown Snake sighting in Reserva de la Biosfera Mariposa Monarca, based on 13 verified sightings from GBIF citizen-science data.

When is the best time to see Mexican Brown Snake in Reserva de la Biosfera Mariposa Monarca?

October has the highest sighting rate for Mexican Brown Snake in Reserva de la Biosfera Mariposa Monarca in our monthly data.

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