sexually distinguished being theme

There is a being that is novel by virtue of how it reproduces, e.g., a being that that reproduces according to a cyclical mating cycle.

5 total · 3 major · 2 minor

StoryLevelMotivation
novel: Herland (1915) major The all-female Herlanders had evolved to reproduce asexually in the aftermath of their men having perished in a volcanic cataclysm.
tos2x05 major Spock entered into the heat that comes toward the end of the seven year mating cycle characteristic of his species.
voy3x16 major The Vulcan Vorik entered into the heat that comes toward the end of the seven year mating cycle characteristic of his species.
ent1x17 minor Kov explained the seven year Vulcan mating cycle to Tucker and Malcolm.
ent2x25 minor A microbe induced T'Pol into the pon farr: the heat that Vulcans experience at the end of their seven year mating cycle.