Snake Identifier
Broad-banded Coral Snake (Micrurus diastema)
Dead Micrurus diastema by Maximilian Paradiz, via Wikimedia Commons, licensed under CC BY 2.0
Cobras & elapids

Broad-banded Coral Snake

Micrurus diastema

A widespread Central American coral snake known for its notably broad black bands compared to many relatives.

Venomous?
Venomous
Adult length
0.6-1.0 m (2-3.3 ft)
Range
Eastern Mexico through Guatemala and Belize to Honduras

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Overview

The Broad-banded coral snake ranges widely from eastern Mexico through Guatemala and Belize to Honduras, making it one of the more commonly encountered Micrurus species across its range. Its name reflects the relatively wide black bands that dominate its tricolor pattern.

It inhabits a variety of lowland and foothill habitats, from humid rainforest to drier tropical forest, and is an important model species for studying coral snake variation across its broad distribution.

How to identify it

  • Red, black, and white/yellow rings, with notably broad black bands relative to the red
  • Smooth, glossy scales
  • Small black-capped head, indistinct from neck
  • Round pupils
  • Moderate body length, typically under 1 m
  • Distinguished from similar species by the relatively wide black banding and geographic range

Habitat & range

Occurs in a range of habitats including humid tropical rainforest, pine-oak forest, and drier tropical deciduous forest from eastern Mexico through Guatemala and Belize to Honduras. Found from lowlands into foothill elevations, sheltering in leaf litter and under logs.

Behavior, diet & reproduction

Fossorial and secretive, generally nocturnal or crepuscular. Preys mainly on other snakes and elongate lizards, occasionally amphibians. Reproduces by laying eggs, typically during the rainy season.

Frequently asked questions

Why is it called 'broad-banded'?

Its black bands are notably wider relative to the red bands compared to many other coral snake species.

Where is it found?

From eastern Mexico through Guatemala and Belize to Honduras.

Is it venomous?

Yes, it has potent neurotoxic venom, though it is shy and bites are uncommon.