Combinations

• Eutaenia atratus Kennicott in Cooper, 1860: 296 [original combination]
• Thamnophis ordinoides atratus — Van Denburgh & Slevin, 1918: 224 [subsequent combination]
• Thamnophis elegans atratus — Fox, 1948: 120 [subsequent combination]
• Thamnophis couchii atratus — Fox & Dessauer, 1964: 266 [subsequent combination]
• Thamnophis atratus — Rossman & Stewart, 1987: 19 [subsequent combination, restaure to species]

Primary references

• Cooper, J.G. 1860. Zoological report. No. 4. Report upon the reptiles collected on the survey. pp. 292–306, pls. 12–16, 19–22, 29, 31 in Stevens, I.I. (Ed.). Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, made under the direction of the Secretary of War, in 1853-5. Route near the forty-seventh and forty-ninth parallels. Volume 12, Book 2.
• Van Denburgh, J. & Slevin, J.R. 1918. The garter-snakes of western North America. Proceedings of the California Academy of Sciences Ser. 4, 8(6): 181–270. BHL
• Fitch, H.S. 1940. A biogeographical study of the Ordinoides Artenkreis of garter snakes (genus Thamnophis). University of California Publications in Zoology 440(1): 1–150.
• Fox, W. 1948. The relationships of the garter snake Thamnophis ordinoides. Copeia 1948(2): 113–120. DOI: 10.2307/1438415 JSTOR
• Fox, W. & Dessauer, H.C. 1964. Collection of garter snakes for blood studies. Yearb. Amer. Phil. Soc. 1964: 263–266.
• Rossman, D.A. & Stewart, G.R. 1987. Taxonomic reevaluation of Thamnophis couchii (Serpentes, Colubridae). Occasional Papers of the Museum of Zoology, Louisiana State University 63: 1–25.

Links

• Uetz, P. & Hallermann, J. 2020. Thamnophis atratus. The Reptile Database. Accessed on 6 May 2018.

• Hammerson, G.A. 2007. IUCN: Thamnophis atratus  (Least Concern). The IUCN Red List of Threatened Species 2007: e.T63970A12732165. DOI: 10.2305/IUCN.UK.2007.RLTS.T63970A12732165.en