By distinct forms to the alpha do you mean forms that are different than the alpha form
Also I think in ants and bees the ants and bees that do not reproduce are called female instead of male or neuter for some reason
Drone - Male
Queen - Female that reproduces or might reproduce
Worker - Female that does not reproduce
From what I heard Usually rich Muslim rulers they would castrate men slaves and then have them guard women in a harem
And also Haram is a word in Muslim Arabic that means forbidden which is connected to the word Harem
@shortstories basically saying that human males might have a non reproductive morphologue if it's coaxed out of them in a warlords and harems environment.