长齿真片叶蜂形态观察及生物学特性

长齿真片叶蜂Eutomostethuslongidentus是毛竹PhyllostachyspubescensMazelexH .deLehaie的食叶害虫 ,可对竹林造成严重损失。该虫 1年发生 1代 ,以 4、5龄幼虫在 6月底 7月初进入越夏越冬。翌年 5月初越夏越冬幼虫复出活动取食 ,5月上旬开始化蛹 ,蛹期 8～ 1 5d。 5月下旬开始羽化、产卵 ,成虫寿命3～ 6d ,卵期 5～ 9d。通过连续 4年的室内外饲养和实地调查观察 ,基本摸清了长齿真片叶蜂 (2 0 0 3年发表新种 )在浙江省遂昌县的生物学特性和发生规律 ,进行了有效的防治。

The morphology and life cycle of Eutomostethus longidentus

Eutomostethus longidentus Wei is a insect pest feeding on leaves of Phyllostachys pubescens Mazel ex H.de Lehaie and cancauses heavy losses. It takes place one generation a year and oversummer and winter as 4～5 instar larva and resume feeding in early May. Itpaputes in early May and the pupal stage 8～15 days. It emergences andoviposits in late May, adult stage 3～6 days and egg stage 5～9 days.Theauthors,though four-year incessant feeding both indoor and outdoor,as well asfieldwork observation have practically understood the biological feature andgenetic law of E. longidentus in Suichang County,Zhejiang Province,which has taken effective meature to prevent thespreading.