Satan has traditionally described as a male in Jewish and Christian writing from the earliest times, though with innovation in this from time to time. In the late medieval period, iconography of the Fall in the adopted the practice of showing the serpent as appearing to Eve in the form of a woman.
http://www.christianiconography.info/adamEve.html
I have seen nothing in the old myths that give Satan a gender at all. I do agree that the perception to most is to see Satan as a male, but that was not the way the ancients thought, from what I have read.
Can you link me up to what you say you have seen of Satan as a male?
Regards
DL
Can you give me any source that says that "the ancients" thought of Satan as a female character?