自20世纪90年代初以来,稻瘿蚊(PachydiplosisoryzaeWood-Mason)成为湘南稻区中、晚稻的主要害虫之一。近年来,该虫在湖南省永州市的江华、江永、道县、蓝山等县经常暴发成灾,并逐年向永州市北部县、区蔓延扩展;郴州市的宜章、汝城、临武、嘉禾等县的稻瘿蚊为害也日趋严重。根据 Since the early 1990s, Pachydiplosisoryzae Wood-Mason has become one of the major pests in middle-late rice in southern Hunan. In recent years, the insect in the Yongzhou City, Hunan Province, Jianghua, Jiang Yong, Daoxian County, Lanshan counties often outbreaks of disasters, and year to Yongzhou North County, spread and expansion; Chenzhou City, Yizhang, Rucheng, Lin Wu, Jiahe and other counties rice gall midge mosquito damage is also increasingly serious. according to