美洲斑潜蝇是危险性害虫 ,1995年 7月在我县首次发现 ,成为蔬菜上主要害虫之一。据调查 ,受害面积 0 .84万ｈｍ2 。主要危害豆科、茄科、葫芦科等 13科 2 8种蔬菜 ,受害最重的四季豆、豇豆、蕃茄、丝瓜、南瓜 ,虫叶率 10 0 % ,虫情指数均 2 6 .7以上。为做好美洲斑潜蝇的防治工 Liriomyza sativae is a dangerous pest and was first discovered in our county in July 1995 as one of the major pests on vegetables. According to the survey, the victim area of ​​0.84 million hm2. The main harms of leguminous plants, Solanaceae, Cucurbitaceae and other 13 families and 28 kinds of vegetables, the hardest hit beans, cowpea, tomatoes, sponge gourd, pumpkin, leaf rate of 100%, worm index were 26.7 or more. In order to do a good job of prevention and treatment workers of the American leafminers