sentences:  Subsequent improvements in male adaptive mating success include web reduction, as seen in the Western black widow, "Latrodectus hesperus".Once mating occurs, the males destroy a large portion of the female's web to discourage the female from future mating, thus reducing polyandry, which has been observed in the Australian redback spider, "Latrodectus hasselti".In some species of spiders, such as "Agelenopsis aperta", the male induces a passive state in the female prior to copulation.