Maevia inclemens
commonly known as the Dimorphic Jumping Spider. The males of this species occur in two forms; the first resembles the female, a sort of salt and pepper mix with yellow and rust red markings.
However, the second form is almost nothing like the former, instead with a black body and three distinct tufts of hair on its cephalothorax.
For more information take a look at the species page on Bugguide.
That male’s got an insane hairdo!
Yep – these guys are something