四纹豆象[Callosobruchus maculatus(F.)]是危害豇豆[Vigha unguiculata(L.)Walp]种子的一种害虫,常可造成贮藏种子的严重损失。四纹豆象首先在田间侵入豆荚、然后随种子进入仓库(Pr-evett,1961),此后便开始大量繁殖,成虫产卵于种子表面,卵在5—7天内孵化。幼虫孵化后钻入种子,在种子内完成其生长发育过程。成虫羽化后便离开种子,在种子 Callosobruchus maculatus (F.) Is a pest that harms the seeds of cowpea [Vigha unguiculata (L.) Walp] and can often cause serious damage to stored seeds. The tetrapod first invaded the pods in the field and then entered the depot with the seeds (Prievett, 1961). After that, the multiplication began. The adults spawned on the surface of the seeds and the eggs hatched in 5-7 days. After the larvae hatch into the seeds, they complete their growth and development within the seeds. After the emergence of adults to leave the seed, in the seeds