Dear Editor,Aphids(Hemiptera:Aphididae)are economically important pests that are distributed worldwide and cause serious economic losses through direct feeding on plant,plant virus transmission,and honeydew production(Zhang and Zhong,1983;Blackman and Eastop,2000).Control of these aphid species relies almost exclusively on the use of chemical insecticides,such as organophosphates,carbamates,pyrethroids,cyclodienes,and neonicotinods.A number of aphid species have become resistant to at least Dear Editor, Aphids (Hemiptera: Aphididae) are economically important pests that are distributed worldwide and cause serious economic losses through direct feeding on plant, plant virus transmission, and honeydew production (Zhang and Zhong, 1983; Blackman and Eastop, 2000). Control of these aphid species relies almost exclusively on the use of chemical insecticides, such as organophosphates, carbamates, pyrethroids, cyclodienes, and neonicotinods.A number of aphid species have become resistant to at least