Although experts differ on classifications, there are 3 North American species listed for the Pituophis genus -- catenifer, deppei, melanoleucus -- with numerous subspecies, 5 in California alone.
One sources refers to Pituophis catenifer affinis as the Sonoran Gopher Snake and Pituophis catenifer deserticola as the Great Basin Gopher Snake. Other subspecies of this genus are variously called pine snakes or bull snakes.
CornCrazy said:Well then, that explains why they look so much alike. A pine snake, bull snake, and gopher snake are all closely related. They are basicallly the same...very little differences. They do vary a little due to locality, however.