Combinations

• Lampropeltis polyzona Cope, 1860: 258 [original combination]
• Ophibolus polyzonus — Cope, 1870: 162 [subsequent combination]
• Coronella formosa polyzona — Bocourt, 1886: 615 [subsequent combination]
• Coronella micropholis polyzona — Gadow, 1911: 117 [subsequent combination]
• Lampropeltis triangulum polyzona — Dunn, 1937: 1 [subsequent combination]
• Lampropeltis doliata polyzona — Klauber, 1948: ll [subsequent combination]

Synonyms

• Lampropeltis micropholis arcifera Werner, 1903: 250
  • Holotype: ISNB 9.422, adult ♀, collctor and date unknown.
  • Type locality: “Mexico”.

• Lampropeltis triangulum nelsoni Blanchard, 1920: 6
  • Holotype: USNM 46552, adult ♂, collected by E.W. Nelson in October 1892.
  • Type locality: “Acambaro, Guanajuato, Mexico”.

• Lampropeltis triangulum schmidti Stuart, 1935: 1
  • Holotype: BMNH 81.10.1.97, adult ♂, collected by Mr. Forrer, date unknown.
  • Type locality: “Tres Marias Islands, Mexico”.

• Lampropeltis triangulum campbelli Quinn, 1983: 116
  • Holotype: UTA 4822, juvenile ♂, collected by J.A. Campbell on 23 August 1975.
  • Type locality: “4.8 km. S Zapotitlán, Puebla, México, elevation 1680 m”.

• Lampropeltis triangulum sinaloae Williams, 1978: 167
  • Holotype: LACM 38529, adult ♀, collected by R.M. Davis on 9 July 1962.
  • Type locality: “32.4 miles north of Mazatlan, Sinaloa, Mexico”.

• Lampropeltis triangulum smithi Williams, 1978: 159
  • Holotype: LSUMZ 274, adult ♂, purchased by M. Newman from a native collector on 5 May 1947.
  • Type locality: “the Xilitla region, San Luis Potosi, Mexico”.

Primary references

• Cope, E.D. 1860. Catalogue of the Colubridae in the Museum of the Academy of Natural Sciences of Philadelphia, with notes and descriptions of new species. Part 2. Proceedings of the Academy of Natural Sciences of Philadelphia 12: 241–266. BHL Reference page. 
• Stuart, L.C. 1935. A contribution to a knowledge of the herpetology of a portion of the savanna region of Central Peten, Guatemala. University of Michigan Museum of Zoology Miscellaneous Publications 29: 1–56.
• Williams, K.L. 1978. Systematics and natural history of the American milk snake Lampropeltis triangulum. Milwaukee Public Museum Contributions In Biology And Geology 2. 258 pp. Reference page. 
• Ruane, S., Bryson, Jr., R.W., Pyron, R.A. & Burbrink, F.T. 2014. Coalescent Species Delimitation in Milksnakes (genus Lampropeltis) and Impacts on Phylogenetic Comparative Analyses. Systematic Biology 63(2): 231–250. DOI: 10.1093/sysbio/syt099 Reference page. 

Links

• Uetz, P. & Hallermann, J. 2024. Lampropeltis polyzona. The Reptile Database. Accessed on 16 May 2018.
• Hammerson, G.A. 2019. IUCN: Lampropeltis polyzona  (Least Concern). The IUCN Red List of Threatened Species 2019: e.T90069354A90069357. DOI: 10.2305/IUCN.UK.2019-2.RLTS.T90069354A90069357.en. Accessed on 30 October 2022.