1990年3月,台湾新屋首次出现水稻水象鼻虫为害,当时发生面积约30公顷,其后迅速扩大蔓延,到9月份受害面积发展达500公顷,分布于桃园、新竹二县境内。水象鼻虫属鞘翅目象鼻虫科,成虫灰褐色,胸背及翅鞘上有一明显黑暗兰色不整形大斑纹。卵乳白色,圆筒形,产于水面下稻株之叶鞘组织内,产卵期约一个月,卵期6～ In March 1990, for the first time in Taiwan’s new houses, rice weevils were damaged. About 30 hectares of land was then present. The area was rapidly expanded and spread to 500 hectares by September. It was distributed in Taoyuan and Hsinchu counties. Water weevil is a coleoptera, Department of weevil family, adult brown, chest and back of the wing sheath has a clear dark blue color is not shaped large markings. Oviduct, cylindrical, produced in the leaf surface of rice sheath tissue, the spawning period of about one month, the egg stage 6 ~