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生盘蚧属Crescoccus白生盘蚧Crescoccus candidus系王子清1977年采自云南大理,并于1982年建立生盘蚧属(新属),白生盘蚧(新种)。其副模系作者于1979年采自云南丽江。1983年至1986年以昆明温泉羊角村为基点,对其生物学习性及综合治理进行研究。该虫主要为害板栗Castanea mollissima、青冈Cyclobalanpsis glauca、麻栎Quercus acutissima,亦可为害苹果;是板栗树的主要害虫。在昆明地区一年一代,以雌成虫在被害枝条上越冬。雌虫产卵高峰期为6月中旬,初孵若虫涌散峰期为6月中旬,1龄若虫峰期为7月中旬,2龄若虫峰期为9月中下旬,雄虫羽化峰期为10月中旬,6月中旬,10月中旬是化学药剂防治初孵若虫及雄虫的有利时机。生命表资料表明各种自然因子致死率达97.8％,因此加强抚育管理,保护利用天敌,适期使用化学农药是治理白生盘蚧的主要措施。雨水冲刷,二种跳小蜂,长尾小蜂,瓢虫等是控制白生盘蚧种群数量的关键因子;每10cm~2有虫19头可定为防治阈值。
Crescoccus coccidae Crescoccus candidus was collected from Dali, Yunnan Province in 1977 and was established in 1982 as a genus Agriocephalus (a new genus) and a member of the genus Physocarpus (new species). Its deputy mold author from 1979 in Lijiang, Yunnan. From 1983 to 1986, based on the hot spring ginkgo village in Kunming, the study on its biological behavior and comprehensive treatment was conducted. The insects mainly cast chestnut Castanea mollissima, Cyclobalanpsis glauca, Quercus acutissima, and can also harm apple; it is the main pest of chestnut tree. In the Kunming area a year, female adults on the victim branches of winter. The peak period of female spawning was mid-June. The nymphal population of newly hatched nymphs was mid-June, the first-instar nymphs peaked in mid-July, the second-instar nymphs peaked in late-mid-September, In mid-October, mid-June and mid-October, it is a good time for chemical agents to control newly hatched nymphs and males. Life table data show that the natural factor lethal rate of 97.8%, thus strengthening the management of tending to protect the use of natural enemies, the proper use of chemical pesticides is the main measure to control white crabs. Rainwater scouring, two kinds of jumping bees, long-tailed bees, ladybugs and so on are the key factors to control the population size of Phalaris ariae; 19 insects every 10cm ~ 2 can be set as the control threshold.