茶树新害虫日本条螽为害习性

The Damage Habit of Damage Habit of Ducetia japonica Thunberg,a New Insect Pest on Tea Plants

日本条螽主要为害茶树嫩梢,啃食后致使梢头掉落或垂下,最后使嫩梢呈枯焦状;当无嫩梢可食时,即啃食叶片,形成长条形或不规则型孔洞。全年中成虫发生盛期在8—9月。为害较重的茶园,枯梢数量达每米茶行6~31个。

Ducetia japonica feeds primarily on tea shoots,causing the affected shoots to droopor drop and eventually forming scorched shoots.In the absence of shoots,they feed on leaves and create long or irregular holes.The peak period for adult insects is fromo August to September.Tea garden with severe damage have a number of dead shoots ranging from 6 to 31 per meter of tea rows.