松毛虫(Thaumetopoea pitycampa)有时能吃光松树的全部针叶,使树木生长缓慢,造成幼树死亡,从第三发育阶段起长有毒毛,可使人们感染疾病,最常见的有荨麻疹、结膜炎、呼吸道充血和气喘等。长期以来,松毛虫防治是个没有完全解决的问题。在法国西南部地区,从7月底至8月中旬,为松毛虫羽化成虫期。雌蛾于交尾后产 The Thaumetopoea pitycampa sometimes eats all the needles of pine trees, slowing the growth of the trees and causing the saplings to die. From the third developmental stage, long poisonous hairs cause people to become infected. The most common are urticaria, conjunctiva Inflammation, congestion and asthma and other respiratory tract. For a long time, the control of pine caterpillars is a problem that has not been completely solved. In the southwestern region of France, from the end of July to mid-August, the pine caterpillar eclosion stage. Female moth after mating