【摘要】 茴香薄翅野螟是黑龙江省油菜和十字花科蔬菜的一种害虫，幼虫蛀食果荚、籽粒。1年2代，以幼虫在土中结茧越冬。第二年5月中下旬开始化蛹，6月羽化。6月中旬至7月上旬是第一代幼虫危害期，第二代幼虫发生于8月。幼虫有吐丝结网习性，成虫羽化当天即可交配产卵，卵产在嫩角果或柄上。成虫有趋光性，寿命4—16天。更多还原

【Abstract】 In Heilongjiang, Euergestis extimali, Scopoli is a kind of pest on rape Department of Agronomy. and other mustard family vegetables. The larva bores through the podsand eats the seeds. It occurs 1 to 2 generations in one year and passes the winter in larve which is in a cocoon in the soil. Next year, it will change into pupa from the second ten days to the last ten days of May.The adult emerges in June. The harm period of the first generation larvoa is from the middle ten days of June to the first ten days of July. The second generation larvea occur in August. The larva has a habit of spitting silk arid making net. The adult can mate immedietly in the day of eme-rgence. Fggs are laid on young pod or its stalk. The adult has phototaxis and can live 4 to 16 days.更多还原