Aphid Sex!!! For most of the year aphids reproduce asexually, cloning
themselves over and over again, occasionally producing winged forms that
fly off to new host trees and start new clonal colonies. Well before
winter sets in they change strategies and start producing sexual
reproductive females and males. The males mate with these new females
and instead of cloning themselves the females lay eggs which survive the
winter and the cycle starts all over again next year.