中纹大蚊Tipula sp,是近年新发现的一种水稻地下害虫,为害逐年加重,为害面积逐年扩大,被害田一般减产84.1％,重者达90％以上,个别田块颗粒无收,已成为当前生产中急待解决的问题。 1983年在我省蛟河市南岗子乡马安山村首次发现中纹大蚊,据调查临近乡镇如前进乡、黄松甸镇、漂河镇都有发生。1988年调查,在东岗、南岗子、马安山、新安等13个村发生面积共1252.5 Tipula sp, a newly discovered pest of rice in recent years, has been increasing year by year. The damage area has been expanding year by year. The yield of damaged fields is generally 84.1%, and the weight is more than 90% The current production of urgent problems. In 1983, in the village of Ma’an, Nangangzi Township, Jiaohe City of our province, it was found for the first time that it was found in midrib. According to the survey, nearly townships such as Qianxiang, Huangsongdian and Piaohezhen had occurred. Survey in 1988, in Donggang, Nangangzi, Ma’an Hill, Xin’an and other 13 villages occurred a total area of ​​1252.5