Reptiles & amphibians · La Saladita, Guerrero

Black-necked Garter Snake

Thamnophis cyrtopsis

Spanish: Culebra de agua

Black-necked Garter Snake (Thamnophis cyrtopsis)
Photographed by maxwell_soell on iNaturalist · taken in Colorado, US, not near La Saladita

Thamnophis cyrtopsis, the blackneck garter snake, is a species of garter snake of the genus Thamnophis. It is native to the southwestern United States, Mexico and Guatemala, and can be found in a wide range of different habitats, often near water sources.

TaxonomyReptilia › Squamata › Colubridae
Local recordsNot recorded by research-grade iNaturalist observations within about 50 km; listed from the site's curated guide
Global records4,797 on iNaturalist

Interactive card with more photos, sounds and similar species Reptiles & amphibians guide iNaturalist Wikipedia

Cite as: “Black-necked Garter Snake (Thamnophis cyrtopsis) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/thamnophis-cyrtopsis/, updated 2026-10-18. 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.