The emigration continued until the transplantation of late rice, but the weevils on the field ridges still emigrated even after transplantation and nearly nothing left.

• 早稻田内的一代成虫在晚稻插秧前一直外迁，田埂上的个体则几乎全部迁出(插秧后仍继续外迁),仅晚稻插秧时尚未迁走的田内成虫(仅占早稻收割前残留一代虫量的5%25？