十六、龟蜡介壳虫龟蜡介壳虫又名日本龟蜡蚧、枣甲蜡蚧。在我省主要为害枣和柿,也可为害杏、梨和苹果。若虫和雌成虫在枝条和叶片上吸食汁液,致使幼枣脱落,树势衰弱,枝条桔死,其排泄物常使寄主并发煤污病。雌成虫卵圆形,体长约3毫米,背部隆起呈半球形,全体紫红色,背面披盖蜡壳。雄成虫体长 Sixteen, turtle wax scale insects turtle wax scale insects, also known as Japan turtle scale, date wax wax scale. Mainly in our province harmful dates and persimmons, but also harmful apricot, pear and apple. Nymphs and female adults in the branches and leaves on the juice, resulting in off juveniles, tree weakness, dead orange branches, their feces often make the host concurrent coal pollution. Ovum female, about 3 mm in body length, hemispherical dorsal raised, all purple, covered with wax shell on the back. Male adult body length