1991年6月15日下午5时左右,河北省宣化县城及城郊降了一场雷阵雨,随风雨落下大量的七星瓢虫,也杂有少量其它种类的瓢虫。城区的行道树上、路旁、公园的花草树木上,郊外的农田里,都爬满了瓢虫。柳枝上、杨树上更多,树下的马路上,密密麻麻,多数都死于车轮和行人的脚下。16日作者骑车调 At about 5 pm on June 15, 1991, a thunderstorm was dropped in Xuanhua County and outskirts of Hebei Province. A large number of ladybirds of Caryopteris landed under the stormy weather. There were also a few other ladybugs. Urban roadside trees, roadsides, park flowers and trees, the suburbs of the farmland, are covered with ladybugs. Willow branches, more poplars, trees under the trees, dense, most died in the wheels and pedestrians feet. 16th author cycling adjustment