黑刺粉虱犤Aleurocanthusspiniferus（Quain－tance）犦属同翅目，粉虱科。在兰溪市主要为害柑橘、葡萄、茶、梨、樟树等，尤以柑橘为甚。黑刺粉虱若虫群集在叶片背面吸食汁液，引起叶片发黄而提早脱落。该虫的排泄物能诱发煤烟病，使枝、叶、果严重发黑，导致枝枯叶落，严重影 Aleurocanthusspiniferus (Quain-tance) 犦 is Homoptera, whitefly Branch. In Lanxi City, the main damage to citrus, grapes, tea, pears, camphor, especially in citrus is even more. Black thorn whitefly nymphs cluster in the back of the leaf to drink juice, causing yellow leaves and early off. The insects excretion can cause soot disease, so that branches, leaves, fruit serious black, leading to dead leaves fall, severe shadow