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Reptiles
Black-necked Garter Snake
Thamnophis cyrtopsis
Authorship: (Kennicott)
Notes
It is not restricted to wetlands on IMRS.
Records
It was observed at Echo Spring, East Well Draw, IMRS HQ area, Peccary Tank, and Red Tank by UTEP personnel.
Sources
[Couvillon, 2011a, b]
Taxonomic Classification
KingdomAnimalia
PhylumChordata (Chordates)
SubphylumVERTEBRATA (Vertebrates)
ClassReptilia (Reptiles)
OrderSquamata (Lizards and Snakes)
SuborderSerpentes (Snakes)
FamilyNATRICIDAE (Harmless Live-bearing Snake Family)
GenusThamnophis
Speciescyrtopsis
Recent Observations
Sourced from iNaturalist
Black-necked Gartersnake (opens in new tab)IMRS
IMRS
IMRS
IMRS
IMRS
IMRSacorral19Jul 9, 2021Fort Hancock, TX, US
Black-necked Gartersnake (opens in new tab)IMRSvanessa5139Oct 12, 2019Hudspeth County, TX, USA
Black-necked Gartersnake (opens in new tab)IMRSamoreno42Oct 12, 2019Fort Hancock, TX, US
Black-necked Garter Snake (opens in new tab)IMRSmissatrox44Jul 18, 2014Hudspeth County, TX, USA
Black-necked Garter Snake (opens in new tab)IMRSmissatrox44Oct 11, 2012Hudspeth County, TX, USA
Black-necked Garter Snake (opens in new tab)crgaborOct 25, 2026Barton Creek Greenbelt Trail, Austin, TX, US
Black-necked Garter Snake (opens in new tab)trdonovanJun 26, 2009Black Canyon City, AZ 85324, USA
Black-necked Garter Snake (opens in new tab)scottolmsteadOct 25, 2026N Redington Rd, Benson, AZ, US
Black-necked Garter Snake (opens in new tab)sierrainwinterOct 13, 2026Rincon Creek Trail, Vail, AZ, US
Black-necked Garter Snake (opens in new tab)dsilverthornOct 25, 2026Travis County, US-TX, US
Conservation assessments from the following sources:
- NatureServe Explorer
- IUCN Red List
- Texas Parks & Wildlife — Species of Greatest Conservation Need (SGCN)
| IUCN Red List | LCLeast Concern |
|---|---|
| NatureServe Global (opens in new tab) | G5Secure |
| NatureServe (Texas) (opens in new tab) | S5Secure |
| Texas SGCN | Not assessed |