枣葵粉蚧Trionymus sp.俗名树虱子,是为害枣树的一种害虫。在河北省枣产区均有分布。 1959年和1975年我们先后在阜平县对该虫进行了观察和防治试验。现将结果整理如下,供参考。 发生规律及习性 生活史 枣葵粉蚧在阜平县一年发生三代,以老熟幼虫越冬,翌年4月上旬出蛰活动,5月初蜕变为成虫,始卵期5月上旬,产卵盛期在5月中旬至下旬。卵期7—15天。 Jujube mealybugs Trionymus sp. Common name tree lice, jujube damage is a pest. Hebei jujube producing areas are distributed. In 1959 and 1975 we have in Fuping County of the insect observation and control experiments. Now the results are organized as follows for reference. Occurrence of regularity and habits of life history Zaokou mealybugs occur in Fuping County, one generation a year, with mature larvae overwintering, early April the following year sting activities, early May transformed into adults, the beginning of ovulation in early May, spawning peak In mid-May to late. Egg stage 7-15 days.