Spermula (1976)

Name: Spermula
Genre: Horror, Science Fiction
Released: 1976-07-07
Duration: 103 min
Cast: Dayle Haddon, Udo Kier, François Dunoyer, Jocelyne Boisseau, Ginette Leclerc

The story is based around "spermulites", the alien inhabitants of a dying planet. The only way they can save their planet is by sucking the men of planet earth dry of sperm, kind of like horny vampires.