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杨梅牡蛎蚧主要有３种，即榆牡蛎蚧、柏牡蛎蚧和锯腹蛎盾蚧。在台州黄岩杨梅产区调查到的牡蛎蚧是榆牡蛎蚧和锯腹蛎盾蚧，主要为害两年生以上的枝条和主干，造成树皮皱缩，树势衰退，产量下降，重者叶落枝枯，甚至死亡。过去，当地习惯在杨梅采后防治介壳虫，但防效仍不十分理
Bayberry Oyster Kuwana there are three main species, namely, oyster Kuwana, cypress oyster Kuwana and saw belly oyster Shield Kuwana. The oyster scale surveyed in the Yangmei producing area of Huangyan, Taizhou showed that the oyster scale and the sawdust oyster scale were mainly harmful to the branches and trunk of more than two years old, causing the bark shrinkage, the decline of the tree vigor, the decrease of yield, ,even death. In the past, the local habits in the bayberry post-mortem control scale insects, but the effect is still not very reasonable