玉米红蜘蛛在我国主要是截形叶螨(Tetranychus truncatus Ehara)和棉叶螨(T.cinnabarinus Boisduval),在华北、华东、华南、西北等玉米栽培区都有不同程度的发生,干旱年份发生更重,被害玉米叶片变白、干枯,造成籽粒秕瘦,严重影响产量。该虫量。该虫还为害棉花、大豆等作物。 选育抗虫品种是防治此虫为害的有效措施之一。现已发现20多种作物对棉红蜘蛛 Maize spider mites mainly Tetranychus truncatus Ehara and T.cinnabarinus Boisduval in China, which occurred in different degrees in maize cultivation areas in North China, East China, South China and Northwest China, and occurred more in drought years Heavy, murine corn leaves white, dry, resulting in lean grains, seriously affecting the yield. The amount of insects. The worm also harm cotton, soybeans and other crops. Breeding insect-resistant varieties is one of the effective measures to prevent this pest. More than 20 crops have been found on cotton spider mites