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本文系统研究了稻水象甲（ＬｉｓｏｒｈｏｐｔｒｕｓｏｒｙｚｏｐｈｉｌｕｓＫｕｓｃｈｅｌ）的生物学特性。描述各虫态和幼虫各龄的形态，报道了成虫取食的植物及幼虫的寄主。该害虫在辽宁东港市年发生一代，部分成虫产第二代卵并发育至二龄幼虫，但不能完成二代生活史。用阶段性饲养的方法得出了卵，一、二、三、四龄幼虫及茧蛹的历期分别为４～５，２、６、７～８、９～１０和９天。详细总结了成虫和幼虫的生活习性，报道了成虫滞育和发育时间，越冬习性和死亡率，在水稻田及稻田外的飞翔、潜水、取食、趋光等活动规律，卵巢发育进程及产卵习性；幼虫的取食和为害特征
In this paper, we systematically studied the biological characteristics of Lisorhoptrusoryzophilus Kuschel. The morphology of each instar and larvae was described, and the hosts of adult plants and larvae were reported. The pest occurred in Donggang, Liaoning Province, a generation of some adult worms produce the second generation of eggs and development to second instar larvae, but can not complete the second generation of life history. The stages of egg, first, second, third and fourth instar larvae and cocoon pupae were obtained from 4 to 5, 2, 6, 7 to 8, 9 to 10 and 9 days respectively. The habits of adults and larvae were summarized in detail. The diapause and developmental time, overwintering habit and mortality of adults were reported. The activities of flying, diving, feeding and phototrophism outside paddy fields and paddy fields were also reported. Egg habit; larvae feeding and damage characteristics