There are hardly any female werewolves because they break all the classic rules of femininity. They force you to confront female violence, strength, size, grotesqueness and uncontrollability. Historically female shapeshifters always shift into something dangerous (snake) or sleek (cat) or dainty (bird) but female werewolves ignore the masculine gaze completely. They're distorted beasts that have no ulterior motive except to destroy. Nothing about them is nurturing or modest. They're the opposite of what a woman "should be." Their omission from pop culture is not an accident.
I don’t think it’s a new fenomenet, in the folklore of my region, the conditions that would curse a boy with lycanthropy would cause a girl to turn into a mare, as in the creature blamed for nightmares and sleep paralysis, and share some characteristics with succubi.
It’s an anecdotal example, but I think it goes to show that the omission of female werewolves in pop culture is just a continuation of what has been happening through centuries.
