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在北京的洋白蜡Fraxinus pennsylvanica Marsh.上发现了一种卷叶绵蚜,小枝端部卷叶里的蚜群在植物生长季节均有发生,绵蚜的寄生造成卷叶,部分卷叶会枯黄,影响美观。这是一种我国新记录的外来种,为原产于北美的洋白蜡卷叶绵蚜Prociphilus fraxinifolii(Riley,1879)。本文描述了该种绵蚜的鉴别特征,记录了其5种捕食性天敌(异色瓢虫Harmonia axyridis,大草蛉Chrysopa pallens,黑带食蚜蝇Episyrphus balteata,食虫齿爪盲蝽Deraeocoris punctulatus和斑楔齿爪盲蝽Deraeocoris ater)和3种访问的蚂蚁(日本弓背蚁Camponotus japonicus,丝光褐林蚁Formica fusca和黑褐草蚁Lasius niger)。
A leafroll aphid was found on Fraxinus pennsylvanica Marsh. In Beijing, the aphid population in the leaf curl at the tip of the twig occurred during the plant growing season. The parasitism of the cotton aphid caused the leaf curling, and some of the curly leaf turned yellow and affected the appearance . This is a newly recorded exotic species in our country, Prociphilus fraxinifolii (Riley, 1879) native to North America. This paper describes the identification of this kind of cotton aphid and records its five predatory natural enemies (Harmonia axyridis, Chrysopa pallens, Episyrphus balteata, Deraeocoris punctulatus, Deraeocoris ater and 3 species of ants visited (Camponotus japonicus, Formica fusca and Lasius niger).