2.Damage *Polyphagous pests, more than 200 host plants recorded. *Mainly cause damage t through boring plants as larvae.During seedling stage of corn or sorghum,bore leaves to produce“花叶”， During seedling stage of millet,bore young leaves to produce“枯心”.After rice shooting and heading stages,larval damage influences nutrient transportation in plants,causing plants to produce non-rich grains.Also,larval damaged plants are easily pushed down by strong winds. ™ Polyphagous pests, more than 200 host plants recorded. ™ Mainly cause damage through boring plants as larvae. During seedling stage of corn or sorghum, bore leaves to produce “花叶”. During seedling stage of millet, bore young leaves to produce “枯心”. After rice shooting and heading stages, larval damage influences nutrient transportation in plants, causing plants to produce non-rich grains. Also, larval damaged plants are easily pushed down by strong winds. 2. Damage 2. Damage