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Reptiles
Checkered Garter Snake
Thamnophis marcianus
Authorship: Baird and Girard
Records
One individual was observed 4 October 2014 in Box Canyon on Rio Grande by D.L. DeSantis (UTEP) and V. Mata-Silva (UTEP).
Sources
[Photos]
Taxonomic Classification
KingdomAnimalia
PhylumChordata (Chordates)
SubphylumVERTEBRATA (Vertebrates)
ClassReptilia (Reptiles)
OrderSquamata (Lizards and Snakes)
SuborderSerpentes (Snakes)
FamilyNATRICIDAE (Harmless Live-bearing Snake Family)
GenusThamnophis
Speciesmarcianus
Recent Observations
Sourced from iNaturalist
Checkered Garter Snake (opens in new tab)
poteetnaturalistOct 25, 2026Coble Rd, Poteet, TX, US
Checkered Garter Snake (opens in new tab)natep26Oct 25, 2026Sandia, TX, US
Checkered Garter Snake (opens in new tab)ospr3yOct 24, 2026McDonald Observatory, TX 79734, USA
Checkered Garter Snake (opens in new tab)nmartinez313Oct 24, 2026Corpus Christi
Checkered Garter Snake (opens in new tab)seth121Jul 24, 2026Webb County, US-TX, US
Checkered Garter Snake (opens in new tab)katmedoroOct 22, 2026Dobie Blvd, Cibolo, TX, US
Checkered Garter Snake (opens in new tab)wightmikeOct 5, 2026Cedar Creek, TX, USA
Checkered Garter Snake (opens in new tab)toogasassafrassOct 5, 2026San Marcos, TX, US
Checkered Garter Snake (opens in new tab)houstontexanOct 20, 2026Texas, US
Checkered Garter Snake (opens in new tab)trailherperOct 11, 2026Imperial County, US-CA, 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 |