鱼尾竹环蝶生物学特性与防治

鱼尾竹环蝶危害毛竹、雷竹等10余种竹子。在浙江省嵊州市1a发生1代，以2～3龄幼虫越冬。翌年4月上中旬开始活动，取食竹叶，危害严重，5月下旬开始化蛹，6月上旬始见成虫，6月中下旬为成虫羽化高峰期，6月下旬为产卵盛期，7月上旬幼虫孵化，上中旬为孵化盛期，幼虫取食至10月下旬进入越冬状态。8月下旬用20％杀灭菊酯乳油3000～5000倍液喷雾防治，效果达96％以上，用绿得宝可湿粉1000倍液喷雾防治效果达92％以上。

Bionomics of Stichophthalma howqua and its control

Stichophthalma howqua (Westwood) attacks bamboos,ie Phyllostachys heterocycla cv.pubescens,P.praecox f. prevernalis.In Shengzhou,it occurs one generation a year and overwinters as the 2nd and 3rd instar larvae.The larvae recover in the first 20 days of April the next year and begin to feed on new leaves resulting in severe damage.It pupates in late May.The adult emerges in June and lays eggs in late June.The larva hatches in July and begins to overwinter in the end of October.The mortality reached 96% and 92% respectively after spraying 20% Fenvalerate Ec 3000-5000 times or Ludebao (Abamectin Bt) Wp 1000 times in late August.