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#1787 · 🦎 reptiles

Black-necked Garter Snake

🇳🇱 Blackneck garter snake ·Thamnophis cyrtopsis

LCleast concern 🦎 Reptiles 📍 outside Europe
Black-necked Garter Snake, photo 1 of 10
1/10 © Yinan Li · CC BY-NC 4.0

what is it?

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.

base stats

  • NL sightings 0iNaturalist, research grade
  • worldwide 4,823iNaturalist observations
  • threat LCleast concern

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
  • 4,823 observations worldwide on iNaturalist.
  • Scientifically named by Robert Kennicott in 1860 (166 years ago).

fact sheet

English
Black-necked Garter Snake
Nederlands
Blackneck garter snake
scientific name
Thamnophis cyrtopsis
class
Reptilia
order
Squamata
family
Colubridae
IUCN Red List
LC · least concern
sightings in NL
0
sightings worldwide
4,823
GBIF records in NL
0
weight
—
length
—
lifespan
—
named
1860 by Robert Kennicott

IUCN in Dutch: niet bedreigd. Blank means the sources don't say.

relatives· Colubridae

Sources: iNaturalist taxon 28345, Wikidata Q1466350, GBIF 2457562, Wikipedia (EN). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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