云南云杉大蚜Cinara alba Zhang属大蚜科、长足大蚜属,分布在四川西部甘孜、阿坝高山云杉林区,多见于海拔2900—3500米的阳坡人工幼林。危害云杉的一年生主侧梢,成若蚜群集主侧嫩梢,吸液危害,单枝虫口常在百头以上。主侧梢被害后,轻则变曲,重则枯死,几年后,被害植株形成丛状主梢,生长下 Cinara alba, a spider mite belonging to the genus Aphididae, grows in the area of ​​Ganzi and Aba Mountains in the western part of Sichuan Province, most of which are found in the Yangpu artificial young forest at an elevation of 2900-3500 meters. Endangered spruce perennial side shoots, into a main aphid clustering young shoots, aspiration damage, single-headed insects often more than one hundred. After the main side shoot victims, ranging from the song, weight is dead, a few years later, the victim plant formation plexiform main shoot, under growth