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Reptiles
Western Groundsnake
Sonora semiannulata
Authorship: Baird and Girard
Notes
A dead Western Ground Snake was fed to three nestling Greater Road Runners 11 September 2012 at IMRS HQ.
Records
It was reported mosly from near IMRS HQ area in pit-fall traps.
Sources
[Couvillon, 2011a, b, Johnson, Johnson, and Riveroll, Jr., 2007, Mata-Silva et al., 2012]
Taxonomic Classification
KingdomAnimalia
PhylumChordata (Chordates)
SubphylumVERTEBRATA (Vertebrates)
ClassReptilia (Reptiles)
OrderSquamata (Lizards and Snakes)
SuborderSerpentes (Snakes)
FamilyCOLUBRIDAE (Harmless Egg-laying Snake Family)
GenusSonora
Speciessemiannulata
Recent Observations
Sourced from iNaturalist
Ground Snake (opens in new tab)
nicholascmjrJul 1, 2025Reno, NV 89511, USA
Ground Snake (opens in new tab)gingvballOct 11, 2026Phoenix, AZ, US
Ground Snake (opens in new tab)itsstarOct 11, 2026Sumida Park, Phoenix, AZ, US
Ground Snake (opens in new tab)edengibson1Jul 3, 2026W Indian Hills Dr, Saint George, UT, US
Culebra suelera semianillada (opens in new tab)victor32992Oct 9, 20265G96+4M, 33077 Delicias, Chih., México
Ground Snake (opens in new tab)katiefindscrittersSep 30, 2026Jean, NV, US
Culebra suelera semianillada (opens in new tab)coralmirelesSep 28, 2026R. Almada Y Torres Sn, Pavis Borunda, 31456 Chihuahua, Chih., México
Ground Snake (opens in new tab)marthakk5Aug 29, 2025Cochise, AZ, US
Ground Snake (opens in new tab)logan_youngSep 17, 2026Yavapai County, US-AZ, US
Ground Snake (opens in new tab)bagefeSep 17, 2026Yavapai County, US-AZ, 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) | G4Apparently Secure |
| NatureServe (Texas) (opens in new tab) | SNRNot Ranked |
| Texas SGCN | Not assessed |
Theses, papers, and notes featuring this species.
- Sonora semiannulata (Ground Snake). Predation. (opens in new tab)Mata-Silva, V., J. D. Johnson, G. Barragan, A. Rocha, W. D. Lukefahr, and R. Couvillon · 2012 · Herpetological Review 43(4): 661–662 · Natural History Note
- Sonora semiannulata. Predation by Scolopendra heros. (opens in new tab)Johnson, J. D., G. W. Johnson, and H. Riveroll, Jr. · 2007 · Herpetological Review 38(1): 93–94 · Natural History Note