Mexican Highlands Gartersnake

Mexican Highlands Gartersnake

Thamnophis pulchrilatus

Silhouette: Alex Slavenko · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered Endemic
Daily sighting probability ~20% · Possible
at Reserva de la Biosfera Mariposa Monarca
10 Verified sightings at Reserva de la Biosfera Mariposa Monarca From 2019 to 2026
10 Verified sightings across 1 park From 2019 to 2026
August Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Mexican Highlands Gartersnake

The yellow-throated garter snake (Thamnophis pulchrilatus) is a species of snake in the family Colubridae. It is found in Mexico. Very little is known for certain about this snake, but it has been observed to reach lengths of 18–36 in (46–91 cm). They are distinguishable by their characteristic coloring, having a dark brown or black dorsal side accented with a yellow to light green stripe along the spine. A checkered yellow and black pattern can be observed along the sides, and the throat of the snake is bright yellow. Thamnophis pulchrilatus are relatively slender and light snakes.

This species has been considered a synonym of Thamnophis cyrtopsis or of Thamnophis eques. It was first described by Cope in 1885 as Eutaenia pulchrilatus. It is found mainly in wooded areas, specifically oak and pine forests at high elevations, but has occasionally been found in grassy fields as well. Some sources report that they inhabit the southwestern United States, but no sightings have ever been confirmed outside of Mexico, and these U.S. reports are likely T. cyrtopsis or T. eques.

These snakes are believed to eat small... 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
~20%

More parks will be added in future updates.

Quick answers

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

About 20% of wildlife watchers report a Mexican Highlands Gartersnake sighting in Reserva de la Biosfera Mariposa Monarca, based on 10 verified sightings from GBIF citizen-science data.

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

August has the highest sighting rate for Mexican Highlands Gartersnake in Reserva de la Biosfera Mariposa Monarca in our monthly data.

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