陕西位于我国中部,北接内蒙,南邻四川,按水、热因素可分5个气候区。植物种类丰富。曾有过桔大实蝇Dacus(Tetradacus)citri Chen的记载,未曾报道有其它实蝇,为了了解实蝇发生情况,我们从1983年起连续几年在陕西南部、中部的部分地区初步开展了实蝇的调查工作。 Shaanxi is located in central China, north of Inner Mongolia, south of Sichuan, according to water, heat can be divided into five climatic zones. Rich plant species. There have been citrus Dacus (Tetradacus) citri Chen’s records, there are no other reported fruit fly, in order to understand the occurrence of fruit fly, we have been in 1983 for several years in southern Shaanxi, central part of the initial implementation of the real Flies investigation.