Reptiles & amphibians · La Saladita, Guerrero
Western Lyre Snake
Trimorphodon biscutatus
Spanish: Culebra-lira cabeza negra
The Western Lyre Snake (Trimorphodon biscutatus) is a mildly venomous colubrid snake native to the western United States, northern Mexico, and Central America.
TaxonomyReptilia › Squamata › Colubridae
Local records18 research-grade observations within about 50 km of La Saladita (the survey box also takes in Zihuatanejo, Ixtapa and Troncones)
Global records492 on iNaturalist
Most recent records2023 – 2026
Months of the 8 most recent records
JanFebMarAprMayJunJulAugSepOctNovDec
Recent local sightings
- 2026-04-27 — observation by glaacosta
- 2026-01-10 — observation by antonio_perez2
- 2026-01-02 — observation by pampahash
- 2025-11-27 — observation by mkoptik
- 2025-11-20 — observation by ryanwhittemore
- 2024-02-18 — observation by jimaudley
Interactive card with more photos, sounds and similar species Reptiles & amphibians guide iNaturalist Wikipedia
Cite as: “Western Lyre Snake (Trimorphodon biscutatus) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/trimorphodon-biscutatus/, updated 2026-09-26. Observation counts and months come from iNaturalist research-grade records within about 50 km of 17.8375°N, 101.7606°W (the survey box also takes in Zihuatanejo, Ixtapa and Troncones); summary text from Wikipedia where present.