Gulf coast tick and dog tick ?

My fiance was recently bitten by a tivk and we are arguing about the species he thinks its a dog tick but I think its a gulf coast tick due to the two vertical stripes at the top and bottom that are parrelle and a few branching lines in between. My question is does a dog tick have these parrelle vertical lines bc all the pictures I've looked at didnt h.ave them. Also we know out of ether species it is a male tick.