二十八星瓢虫,又名花大姐、花媳妇、胖小等,属鞘翅目瓢虫科。二十八星瓢虫在我国分布很广,凡是有马铃薯栽培的地区都有发生。据文献记载,受它为害的寄主植物在35种以上,绝大部分是农作物,其中受害最重的是马铃薯。生活习性根据我们近几年来的调查观察,二十八星瓢虫在晋东南区一年发生两代,以成虫在背风向阳的砂土地1—2寸深的土下、石缝或杂草中群集越冬。翌年5月下旬,越冬成虫开始活动,6月上、中旬为产卵初期,6月下旬至7月上旬为产卵盛期,7月 Twenty-eight star ladybug, also known as Sister Flower, flower daughter-in-law, fat small, Coleoptera ladybug. Twenty-eight star ladybug is widely distributed in our country, where there are potato cultivation areas have occurred. According to the literature, more than 35 host plants are harmed by it, most of which are crops. The most affected are potato. Habits According to our investigation in recent years, twenty-eight ladybugs occur in southeastern Jindi two generations a year to adults in the leeward sunny sand 1-2 inches deep soil, stone or weeds Cluster wintering. In late May the following year, the overwintering adult began to move, and the upper and middle stages of June were the initial stage of laying eggs. The period from late June to early July was the peak of laying eggs. In July