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水杉色卷蛾是水杉的一种主要害虫。在湖北省利川县一年发生1代,以初孵幼虫在树干及枝桠的皮下滞育和越冬,滞育期长达9—10个月,到翌年4月上旬幼虫开始恢复活动。幼虫5龄。老熟幼虫在寄主上卷叶化蛹,但在小片被害严重的幼林中,亦发现少数老熟幼虫可吐丝下到地面的杂草上卷叶化蛹。蛹期9.5—1.5天。雌蛾羽化后1—2天即可产卵,卵一般3—6粒重叠堆产于叶片的背面,少数为单粒散产,最多可12粒堆产在一起。雄蛾寿命3.5—7天,雌蛾寿命5—125天。卵期7.5—12天。室内试验表明,对幼虫喷杀螟松、乐果、溴氰菊酯、杀灭菊酯、倍硫磷均有良好效果。
Metasequoia curculionidae is a major pest of Metasequoia. In Lichuan County, Hubei Province, one generation a year occurred, with newly hatched larvae in the trunk and branches of the sub-diapause and overwintering diapause of up to 9-10 months, early April the following year the larvae began to resume activity. Larvae 5 years old. Mature larvae curl on the host leaf pupation, but in small young seriously injured young, also found a few mature larvae can spit silk weeds on the ground down leaf pupation. Pupal 9.5-1.5 days. Females can spawn 1-2 days after emergence, the eggs are generally 3-6 piles stacked on the back of the leaves, a small number of single grain casualties, up to 12 piles together. Male moths live 3.5-7 days and female moths live 5-125 days. Egg stage 7.5-12 days. Laboratory tests show that the larvae spray fenitrothion, dimethoate, deltamethrin, fenvalerate, fenthion have good results.