Preliminary Study on Biological Characters of Gilpinia lipuensis

Gilpinia lipuensis,damaged to Pinus massoniana,was an accidental insect and had 3 generation each year in Xianju of Zhejiang Province.It overwintered in pupa and begined emergence in the middle of April of next year.The larva of first generation occured at the end of April to the middle or late June.The larva of the second generation occured in the early July to middle or late August.The larva of the third generation occured in the middle of September to early or middle November.Applying some pesticides such as deltamethrin was effective and satisfactory.