猖獗于整个亚洲水稻产区的褐稻虱(Nilaparvata lugens),在日本南部,也是头等重要难以对付的水稻害虫。人们认为在6～7月的雨季褐稻虱是同白背飞虱(Sogatella furcifera)一道从海外迁入的,并具有很大生殖潜力,在秋季常造成水稻的毁灭性为害。在日本,因为没象东南亚地区采用抗虫品种等有效的非化防措施,便 Nilaparvata lugens, which are rampant throughout paddy areas in Asia, are also the first and most important rice pests to deal with in the South of Japan. It is thought that brown planthopper migrates overseas from Sogatella furcifera during the rainy season of June-July and has great reproductive potential, often causing the devastating damage of rice in the fall. In Japan, because there is no effective non-chemical prevention measures such as the use of insect-resistant varieties in Southeast Asia,