To show what I mean, here's a picture of an archetypal male femme:
That's Eddie Izzard, of course.
As far as I know, Eddie doesn't describe himself as a male femme. Instead, he creates his own personal labels: "an executive transvestite", "a male tomboy", "two lesbians trapped in a man's body", and other such esoteric and piquant nomenclature.
But "male femme" is also appropriate, I think. Notice that Eddie is making no attempt to pass. There's no sort of woman there, no disguise (for whatever reason) about who he is. There's just a man in women's clothes, looking good, feeling good, displaying his femme style. A femme man.
A male femme.
Got me? :)