山楂新害虫超小卷叶蛾（Pammene sP）的研究

经过1982,1985,1986年3年对山楂超小巷叶蛾的研究,结果表明:该虫1年发生1代,以老熟幼虫在翘皮下结茧越冬,化蛹与羽化集中,卵、蛹的发育历期与温度呈直线相关,回归方程分别是y卵=-0.744x+21.13;y蛹=-3.24x+67.72。并记述了山楂超小卷叶蛾各虫态的形态特征、发生时期和消长规律。

Study on Pammene sp.,a New Insect Pest of Hawthorn

Experiments on Pammene sp. were conducted in 1982, 1985 and 1986. The results indicate that larvae hibernate during the winter in the cocoons under the dead bark of trunks and branches of hawthorn tree. There are evident of peak stages of pupation and emergence in this pest. It has been found that the correlation of temperature with deve- lopment of both egg and pupa is characterized by a straight line pattern, The regression equations ate: yegg=-0. 744x+21.3; ypupa= -3.24x+67.72. In this paper, the morphological features of each deve- lopment stage and the injured appearance of the flowers and fruits of the tree are also described; in addition,the oceurrence and fluctuation of the insect are demonstrated, and efficient control measures put forword.