Snake Identifier
San Luis Potosi Kingsnake (Lampropeltis mexicana)
Lampropeltis mexicana by Danny S. 001 by Danny S., via Wikimedia Commons, licensed under CC BY-SA 3.0
Colubrids

San Luis Potosi Kingsnake

Lampropeltis mexicana

A boldly banded Mexican highland kingsnake with striking red, black, and cream tricolor rings.

Venomous?
Non-venomous
Adult length
0.7-1.0 m (2.3-3.3 ft)
Range
San Luis Potosi and adjacent highlands of central Mexico

Found a snake like this?

Identify any snake from a photo, free.

Identify a snake

Overview

The San Luis Potosi Kingsnake, often referred to by the species name Lampropeltis mexicana, is native to the arid highlands and rocky slopes of central Mexico. It is well known for its vivid banding, though wild populations remain secretive.

It belongs to the broader Mexican kingsnake group characterized by bold tricolor patterns that may serve a mimetic function toward venomous coral snakes.

How to identify it

  • Bold bands of red or orange bordered by black, separated by narrow white or cream rings
  • Smooth, glossy scales
  • Rounded head with round pupils, distinctly non-triangular
  • Slender to moderately built body
  • Look-alikes: other Mexican tricolor kingsnakes and coral snakes; ring width and sequence assist identification

Habitat & range

Inhabits rocky, arid to semi-arid highland terrain, including scrubland and open woodland in central Mexico, often near rock outcrops that provide shelter and thermal refuges.

Behavior, diet & reproduction

Primarily crepuscular and nocturnal, especially in warmer months, sheltering under rocks during the day. It is a constrictor that feeds on lizards, small mammals, and other reptiles. It lays eggs in concealed, humid locations.

Frequently asked questions

Is the San Luis Potosi Kingsnake dangerous?

No, it is entirely non-venomous.

Where is it found in the wild?

It occurs in rocky highlands of San Luis Potosi and neighboring Mexican states.

Why does it have such bold coloration?

Its bright banding is thought to provide mimicry protection by resembling venomous coral snakes.

What kind of habitat does it prefer?

Arid to semi-arid rocky terrain with abundant crevices and cover.