There are 3 subspecies of Lampropeltis calligaster:

-Lampropeltis calligaster calligaster - Prairie Kingsnake
-Lampropeltis calligaster rhombomaculata - Mole Kingsnake
-Lampropeltis calligaster occipitolineata - South Florida Mole Kingsnake

A little clearer now?

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Pierson Hill

Herpetology and Herpetoculture