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茶芽瘿蚊(Contarinia sp)是我国茶树上新记载的一种害虫,在广东一年发生三代,以幼虫越冬。幼虫期为30～160天;蛹期6～10;成虫寿命平均3.0～4.5天,卵期4～11天。成虫飞翔扩散能力不强,夜间活动,有趋光性,产卵于刚萌动的芽上,孵化后幼虫侵害嫩芽,使芽结成虫瘿。每雌产卵量60～80粒,幼虫终生在芽苞内为害,老熟后落土化蛹。调查了其发生与环境的关系。 防治此虫,采用人工摘除瘿苞和幼虫出苞期及成虫羽化出土盛期在茶篷下施药效果较好,可用药剂DDVP,杀灭菊酯。
Contarinia sp is a newly recorded pest on tea tree in our country. Three generations occur in Guangdong in one year, and wintering larvae. The larval period is 30 to 160 days; the pupal stage is 6 to 10; the adult life expectancy is 3.0 to 4.5 days in average and the oviposit period is 4 to 11 days. Adult flying ability to spread is not strong, night activities, phototaxis, spawning just budding on the sprout, after hatching infested buds, so that the bud into the gall. The number of fecundity per female is 60 ~ 80, and the larvae are harmful for life within bud bud. Investigated its occurrence and the environment. Prevention and control of this pest, the removal of the bract and larvae by artificial budding and adult fecundity peak period in the tea canopy under the spraying effect is better, the available drug DDVP, fenvalerate.