豆秆黑潜蝇Melanagromyza Sojae(zehntner)为双翅目潜蝇科的一种小型蝇,是我国黄淮流域大豆产区主要害虫之一。据我省多年调查:夏大豆被害株率高达100％,单株有虫3—5头,多者达10余头,一般减产两成左右,严重的减产4—5成。1980—1982年针对该虫在我省生物学和生态学特性的表现进行了观察研究,现整理初报如下: Melanagromyza Sojae (zehntner), a small flies of the order Diptera, is one of the major pests in the soybean producing area of ​​Huang-Huai River basin in China. According to many years of investigation in our province, summer soybean strain rate as high as 100%, 3-5 insects per plant, more than 10 heads, generally cut about 20%, a serious cut 4-5%. 1980-1982 for the insect in the province of biology and ecological characteristics of the performance of the observation and research are now finishing the first report as follows: