学名:Aphis gossypii,分布于全国各地及世界其他各国。
寄主:第一寄主(越冬)为石榴、花椒、木槿和多种鼠李属植物,第二寄主为棉花和瓜类。
危害特征:以刺吸口器吸食汁液,受害叶片向背面卷缩,叶表有蚜虫排泄的蜜露,并往往滋生霉菌。
形态特征:翅胎生雌蚜体长不到2毫米,身体有黄、青、深绿、暗绿等色。触角约为身体一半长。复眼暗红色。腹管黑青色,较短。有翅胎生蚜体长不到2毫米,体黄色、浅绿或深绿。触角比身体短。翅透明,中脉三岔。卵初产时橙黄色,6天后变为漆黑色,有光泽。卵产在越冬寄主的叶芽附近。无翅若蚜 与无翅胎生雌蚜相似,但体较小,腹部较瘦。有翅若蚜 形状同无翅若蚜,二龄出现翅芽,向两侧后方伸展,端半部灰黄色。
Cotton aphid
DESCRIPTION:Adult aphids are about 2 mm long and may be winged or wingless. The cotton aphid is pale to dark green in cool seasons and yellow in hot, dry summers. The adult cowpea aphid is shiny black with white appendages.Cotton aphid nymphs are smaller than but similar in shape and color to the wingless adults. Cowpea aphid nymphs are pale green to gray with a powdery coating.
Host plants:The cotton aphid infests cotton, okra, hibiscus, cowpea, citrus, cucurbits, strawberry, bean etc.
Damage: Damage is caused by the sucking of sap and the production of honeydew. The indirect attraction it exerts upon ants constitutes an additional problem. This aphid is considered as a vector among others, of the Tristeza citrus fruit virus.
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