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海松干蚧(Matsucocous koraiensis Young et Hu)是红松原始林的干部害虫,广泛分布在黑龙江省的小兴安岭、张广才岭和东部山区,以及吉林省的长白山区。海松干蚧在黑龙江省丰林林区1年1代,以1龄若虫越冬。越冬后,2龄若虫期是主要危害期。成虫出现在6月初,盛期为6月中旬,行两性生殖,但观察到一头雌虫在交尾前产卵。雌成虫平均产卵量为98拉。新若虫在6月下旬孵化,7月上旬未达盛期,随后选择细皮结构的寄主危害。海松干蚧主要发生在南坡、西南坡的红松原始林。作者调查了8块红松人工幼林,未发现此害虫。已将害虫接种到人工林,是否可以越冬需进一步调查。草蛉和蚁类是显著控制害虫虫口密度的重要天敌。
Matsucocora koraiensis Young et Hu are the cadre pests in the native forest of Korean pine. They are widely distributed in Xiaoxing’anling, Zhangguangcailing and eastern mountains of Heilongjiang Province and Changbai Mountain of Jilin Province. Haematococcus pluvialis in Fenglin in Heilongjiang Province 1-year-old, nymphs to win the first instar. After the winter, the 2nd instar nymphs are the main hazard period. The adult appeared in early June and peaked in mid-June for bisexual reproduction, but a female was observed laying eggs before mating. The average fecundity of female adults is 98 pull. The new nymphs hatched in late June and did not reach their peak in early July, followed by the selection of the host of fine-skinned structures. Crataegus micrantha mainly occurs in the southern slope, the Korean pine forests on the southwestern slope. The authors investigated eight Korean pine young plantations, did not find this pest. Pests have been inoculated into plantations, whether overwintering need further investigation. Grasshoppers and ants are important natural enemies that significantly control pest population density.