黄缘阿扁叶蜂生物学特性与防治试验研究

黄缘阿扁叶峰(Acantholyda flavomarginata Maa)是一种严重危害云南松针叶的害虫，1994年首次在越西县云南松林区发生。一年发生一代，以老熟功虫入土作室化蛹，以预蛹越冬。翌年4月上旬开始活动，5月中旬为产卵盛期且幼虫开始孵化，幼虫5龄～7龄，6月下旬幼虫开始下树，7月下旬全部下树越冬。有效防治措施为卫生伐、人工物理和化学药剂防治相结合。幼虫2龄～3龄期是化防的最佳时期，杀虫双、灭扫利等的致死率达90％以上。

Biological Characteristics of Acantholyda flavomarginata Maa and its control tests

Acantholyda flavomarginata Maa is one of the worst pests which is severely harmful to forest of Pinus yunnanensis Sieb.et Zucc in Yuexi County of Liangshan Prefecture,Sichuan Province.It was first found in 1994.By the means of observations at given locations in the field,feeding and experiments in the lab from 1997 to 2000,results have revealed that one generation of Acantholyda flavomarginata Maa.occurred per year in this county,and its adult larvas dug earth chamber underground,then came through a whole winter in the form of pupas.At the beginning of April in the next year it came into its new biological behavior phase,oviposited in the middle of May while its larvas hatched and lived from 5 to 7 stages.The larvas departed from the trees at the end of June and finished their preparation for hibernation at the end of July.Effective control measures include sanitation disafforestation,manual protections,and spraying insecticide.Chemical protection during its 2 or 3 stages can obtain better effect.In addition,insectside Dimehypo and Fenpropathrin may have more than 90% of the death rate of the pest.