为了研究朝鲜毛球蚧Didesmococcus koreanus Borchsenius“预蛹”和“蛹”生殖系统的发育，通过体视显微镜（Olympus）观察其2龄若虫至雄成虫形态特征的变化规律。结果表明：朝鲜毛球蚧预蛹期为2 d~4 d，蛹期4 d~6 d；雄性生殖系统主要由一对精巢（T）、一对输精管（vd）、射精囊（es）、射精管（ej）以及一对性附腺（me）组成。在不同发育阶段，朝鲜毛球蚧雄性生殖系统的形态结构发生一系列的变化。2龄若虫末期精巢的顶端膨大，充满白色内容物。预蛹期精巢基部变粗，内容物呈现明暗条纹，输精管和射精管的长度有所增加。蛹期精巢内容物呈凝胶状，明暗条纹消失。雄成虫精巢形态变得扭曲，呈现出端部尖细，基部膨大的形态特点，射精囊明显膨大，充满白色凝胶样精子。

In order to study the development of the reproductive system of the "pre-pupa" and "pupa" of Didesmococcus koreanus Borchsenius, the morphological characteristics during the process from the 2nd instar nymphs to male adults were observed under the microscope (Olympus). The results showed that: the prepupal duration is 2-4 days, and the pupal duration is 4-6 days; The male reproductive system is composed of a pair of testis (T), a pair of vas deferens (vd), ejaculatory sac (es), ejaculatory duct (ej), and a pair of mesadenia (me). At different stages of development, the morphological structure of the male reproductive system of the D. koreanus was observed a series of changes. At the end of the 2nd instar nymphs, the apex of the T is enlarged and full of white content. In prepupal stage, the base of the T became thicker, the contents showed light and dark stripes, and the length of the vd and ej increased. The stripes in the T of the pupal stage disappear and the contents are gel-like. The T of the male adult became distorted, with a pointed end and enlarged base. The es of the male adult was enlarged and filled with white gelatinous spermatozoa.