芦苇钻心虫Archanara aerata Butter,属鳞翅目夜蛾科,是微山湖沿湖芦苇上新发现的一大害虫。受害区虫株率一般在60—70％。从1977年开始,我们对此虫进行了研究。现将研究结果报告于后。 一、形态特征 卵 扁圆,中间稍凹,四周有明显的稜边和较浅的齿轮缺刻。卵径1毫米,厚0.2毫米,初产时白色,次日变成灰褐色。 幼虫 体白,初龄体背无纵线,2龄后出现4条淡紫色宽纵线。1—3龄前胸背板有明显 Archanara aerata Butter, a member of the family Lepidoptera, is a newly discovered pest on reeds along Weishan Lake. Damaged insect strains generally 60-70%. Since 1977, we have studied this pest. The research results are reported later. First, the morphological characteristics of oval oblate, slightly concave in the middle, surrounded by obvious edges and shallow gear nicks. Ovum diameter 1 mm, thickness 0.2 mm, first-born white, turned gray-brown the next day. Larvae body white, juvenile body without longitudinal first line, after 2 age 4 lavender wide vertical line. 1-3 thoracodorsal obvious