５　性信息素与种间生殖隔离所谓“种”是指能交配和繁殖的自然个体所形成的“集团”。在自然界，种间存在生殖隔离。昆虫实现生殖隔离的方式有：时空隔离（诸如生境、发生季节和求偶时间不同）；形态隔离（体形相异及交尾器官形态不同）；行为隔离（性信息素的种间特异性）； Sex pheromone and interspecific reproduction Isolation The so-called “species” refers to the “individual group” formed by natural individuals that can mate and reproduce. In nature, there is genital isolation. Insect reproductive isolation methods are: space-time isolation (such as habitat, the occurrence of season and courtship time difference); morphological isolation (body shape and the morphology of the copulatory); behavior isolation (sex pheromone species specificity);