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芹菜二尾蚜(即柳二尾蚜)Cavariella sa-licicola(Matsumura)是为害芹菜和柳树的重要害虫。近年来在陕西为害芹菜有加重的趋势,作者于1981～1985年对该虫进行了初步研究。
Celery Aphis two Aphids (ie, Aphis gossypii) Cavariella sa-licicola (Matsumura) is a harmful pest of celery and willow trees. In recent years, it is aggravating that it is harmful to celery in Shaanxi Province. The author conducted a preliminary study on the insect in 1981 ~ 1985.