3.Damage 3)Females lay eggs inside of sheathes. 4)Produce excreta to cause leaf mold 5)Transmit virus diseases Many viruses infecting rice,wheat,corn are spread by the small brown planthopper. 3) Females lay eggs inside of sheathes. 4) Produce excreta to cause leaf mold 5) Transmit virus diseases Many viruses infecting rice, wheat, corn are spread by the small brown planthopper. 3. Damage 3. Damage