拉美斑潜蝇是我省新发现的重要检疫性害虫 ,对蔬菜及花卉生产威胁较大 ,其寄主植物已知的有 1 4个科 ,该虫在我市各蔬菜基地普遍发生。据调查 ,黄瓜、丝瓜番茄、辣椒、豇豆、瓠瓜、芹菜、空心菜、油白菜等蔬菜均受严重危害。现将其田间识别和防治方法介绍如下。1　田间识别方法 Laminaria occidentalis is an important quarantine pest newly discovered in our province. It poses a great threat to the production of vegetables and flowers. Its host plant is known to have 14 families, which are common in various vegetable bases in our city. According to the survey, cucumber, loofah tomato, pepper, cowpea, cucumber, celery, spinach, cabbage and other vegetables are severely harmed. Now its field identification and prevention methods are described below. 1 field identification method