摘要
梅绢祝蛾Scythropiodes issikii(Takahashi,1930)原名梅木蛾Odites issikii,是多种林果植物的食叶害虫.调查发现梅绢祝蛾在鲁西北地区危害三球悬铃木(法桐)Platanus orientalis、绒毛白蜡Fraxinus velutina、国槐Styphnolobium japonic um、花椒Zanthoxylum bungeanum、黄荆Vitex negundo等20多种寄主植物;1a发生3代,以1-2龄幼虫在枝干裂缝、翘皮等处越冬;全年3代成虫发生期主要在6月上中旬、7月中下旬及8月上旬、9月上中旬.详述了成虫和幼虫的生活习性及幼虫的折卷叶危害特点.初步测定幼虫有6龄,各龄平均头宽分别为0.24、0.35、0.53、0.78、1.09、1.57 mm.明确幼虫期寄生性天敌有长腹羽角姬小蜂 Sympiesis dolichogaster、浅绿羽角姬小蜂 Sympiesis viridula、弯沟啮小蜂 Baryscapus sp.、松毛虫埃姬蜂 Itoplectis alternans epinotiae、甲腹茧蜂Chelonus sp.等物种.提出了防治建议.
Abstract
Scythropiodes issikii(Takahashi,1930),formerly known as Odites issikii,is a leaf-feeding pest of many kinds of forest and fruit plants.It was found that Scythropiodes issikii used more than 20 kinds of plants as host,such as Platanus orientalis,Fraxinus velutina,Styphnolobium japonicum,Zanthoxylum bungeanum,Vitex negundo and so on in the northwestern part of Shandong Province.Three generations occurred per year,overwintering with the first or second instar larvae in branch cracks,buckskin,etc.Adults occurred mainly in early-mid June,mid-to late July and early-August and early-mid September.The habits of adults and larvae and the characteristics of larval leaf-folding and curling damage are described in detail.Preliminary determination,the larvae had six instars,and the average head width of each instar was 0.24,0.35,0.53,0.78,1.09,and 1.57 mm,respectively.The parasitic natural enemies in the larval stage include Sympiesis dolichogaster,Sympiesis viridula,Baryscapus sp.,Itoplectis alternans epinotiae,and Chelonus sp.Pest control recommendations were provided.
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