田螺和蜗牛田螺和蜗牛头上有一对触角.雄性田螺和蜗牛的右触角是弯曲的。雌性田螺和蜗牛的右触角是直的。蝉腹部长有音板和发音膜,能够发声的为雄性。反之为雌性。蟋蟀看尾须。腹部末端长有两根尾须的为雄性,末端看上去多了一根尾须的为雌性。 Snails and snails Snails and snails have a pair of antennae on their heads. The right antennae of male snails and snails are curved. The right tentacles of female snails and snails are straight. There is a soundboard and a sounding film in the abdomen and the male is able to speak. The opposite is female. Look at the tail. At the end of the abdomen there were two males with tails, and at the end the tail looked more female.