originally, yes tenor is male.
but I was told that yes there is female tenors, just not alot like saprano, 2nd saprano, and alto.
I was considered an alto last year, but after being assigned a solo, my director said i was more of a tenor than a alto, due to the fact that my solo was originally a tenor solo. I'm the only girl in my group that is a female tenor, so they are not many of us in choirs.