珍珠梅纽扁叶蜂生物学特性及防治技术研究

珍珠梅纽扁叶蜂Neurotoma sibirica Gussakovskij在海城1 a发生1代,以预蛹在土壤中越夏、越冬,翌年4月上旬化蛹。4月下旬成虫开始羽化至6月上旬,5月中、下旬为盛期。卵出现于4月下旬,于5月中旬开始孵化,孵化盛期为5月下旬。老熟幼虫于6月中旬下树入土。珍珠梅纽扁叶蜂有13种天敌,其中显背臀姬蜂Notopygus insignis Kriechbaumer为中国新纪录属、种,异色瓢虫Harmonia axyridis(Pallas)是优势种。利用3种农药对珍珠梅纽扁叶蜂3龄幼虫进行防治试验,效果达93%以上。

Bionomics and control of Neurotoma sibirica

Neurotoma sibirica Gussakovskij has one generation a year in Haicheng,Liaoning Province.It overwinters as prepupa in the soil and begins to pupate in the first ten days of April the next year.The adult emerges between the last ten days of April and the beginning of June.The eggs occurs between the last ten days of April and the first ten days of June.The larva hatches in mid May.In mid June the mature larva comes down trees and goes into soil.Thirteen species of natural enemies are found.Among them Notopygus insignis Kriechbaumer is a new record in China and Harmonia axyridis(Pallas) is the dominant species.Three pesticides were used against the 3rd instar larvae and the mortality was above 93%.