梨黄粉蚜Aphanostigma jakusuens Kishidah属同翅目,疣蚜科(phylloxidae)是梨树上重要害虫之一。四川自1969年金川梨区发现危害后,相继在省内其它梨区也有发生,据1977—79年在雅安田间调查,虫果率一般在20—30％左右,个别植株高达70％以上,致使梨果品质低劣、不耐贮藏。 Aphanostigma jakusuens Kishidah is a Homoptera and the phylloxidae is one of the most important pests in pear trees. Since the discovery of the hazard in Jinchuan pear district in 1969, Sichuan has also occurred in other pear areas successively in the province. According to the field survey in Ya’an from 1977 to 1979, the rate of insect fruit is generally about 20-30% and that of individual plants is as high as over 70% Pear poor quality, intolerance storage.