Study on Strobilomyia lijiangensisⅠ. Distribution,Damage, Morphological and Biological Characteristics

The morphological features,life history and biological characteristics of Strobilomyia lijiangensis were recorded,the distribution and the damage status of the pest were investigated.It was found out that Strobilomyia lijiangensis occurs one generation annually in Lijiang and Diqing districts and the pupae overwintered in the forest litter of soil.The emergence period of the adults was in the mid and late April,the adults began to oviposit in early May and the eggs started to hatch in mid May.The last instar larvae began to pupate in the soil in mid June after having damaged for about 30 days.The larvae fed on tender cones of Larix potaninii var.macrocarpa and the damage rate was from 22.65% to 78.70%.