桑椹浆瘿蚊的生物学特性及防治技术研究

桑椹浆瘿蚊（ContariniamorulaeJiangnomennudum）是新发现的一种桑树害虫。在陕西关中地区年发生1代，以幼虫寄生于雌花子房内为害，5月中旬幼虫老熟后弹跳入土结茧越夏越冬。采用蛹期或幼虫入土期地面薄膜覆盖；或蛹期每公顷用40％甲基异柳磷乳油6kg或50％甲基对硫磷6.6kg拌适量干细土撒施于桑园土壤，有较好的防治效果。

STUDIES ON THE BIOLOGICAL CHARACTERS AND CONTROL OF Contarinia morulae JIANG NOMEN NUDUM (Diptera:Cecidomyiidae)

Sorosis gall-midge (Contarinia morulae Jiang nomen nudum) was a new mulberrypest in Shaanxi province. The new species was firstly described in this article. It com-pletes one generation per year in central Shaanxi. The larvae parasitize in the ovaries ofmulberry female flowers. The matured larvae spring down into earth and go into dia-pause in cocoons. The results indicate that it can be controlled well by covering the soilwith the polythene sheet during the period of pupa and/or matured larvae,or spraying6kg of 40% isofenphos-methyl emulsion or applying 6. 6kg of 50% paration-methyl(mixed with fine soil) per hectare all over mulberry garen during the pupal stage.