沙田柚瘿蚊是近年来为害沙田柚生产的一种重要害虫 ,据调查该虫喜阴蔽潮湿的山地和河滩地的沙田柚园。在我区 1 997年和 1 998年该虫为害特别严重 ,一些产区为害面积达 70 %以上。造成大量落果 ,严重影响了沙田柚的生产 ;而 1 999年该虫的发生为害则相对较轻。通过分析 ,这与当 Shatianye mosquito mosquito is an important pest that is harmful to the production of Shatian pomelo in recent years. According to the survey, it is found that the insect is overcast in the wet mountainous areas and the pomelo garden in Shatian. In our district, the insects were particularly serious in 1997 and 1988, with some areas producing more than 70% of the damage. Which caused a great deal of fruit drop and seriously affected the production of pomelo. However, in 1999, the incidence of the pest was relatively low. Through analysis, this and when