梨黄粉蚜俗名“黄粉虫”，是近年来在梨树上危害较重的一种害虫。由于黄粉蚜的危害而造成的烂果率一般在10％－15％之间，危害严重时，烂果率可高达40％，严重地影响了梨果的产量、质量和经济效益。一、形态特征1．成蚜：虫体卵圆形，鲜黄色，体长约0．7－0．8mm。头胸部宽度约 Pear yellow powder aphid common name “Tenebrio”, is a pest harming heavier in recent years. Due to the harm of yellow aphid, the rate of rotten fruit is generally between 10% -15%. When the damage is serious, the rate of rotted fruit can reach as high as 40%, which seriously affects the yield, quality and economic benefit of pear fruit. First, the morphological characteristics Into aphids: parasites oval, bright yellow, body length of about 0.7-0.8mm. Head and chest width approx