Thamnophis sirtalis annectens BROWN 1950
Thamnophis sirtalis concinnus (HALLOWELL 1852)
Thamnophis sirtalis dorsalis (BAIRD & GIRARD 1853)
Thamnophis sirtalis fitchi FOX 1951
Thamnophis sirtalis infernalis (BLAINVILLE 1835)
Thamnophis sirtalis pallidulus ALLEN 1899
Thamnophis sirtalis parietalis (SAY 1823)
Thamnophis sirtalis pickeringii (BAIRD & GIRARD 1853)
Thamnophis sirtalis semifasciatus COPE 1892
Thamnophis sirtalis similis ROSSMAN 1965
Thamnophis sirtalis sirtalis (LINNAEUS 1758)
Thamnophis sirtalis tetrataenia (COPE in YARROW 1875)