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形态特征山楂叶螨,又名山楂红蜘蛛,火龙虫。为世界性害虫,在全国分布很广,大部分枣区都有发生。①成螨:雌成螨卵圆形,体长0.54～0.59毫米,冬型鲜红色,夏型暗红色。雄成螨体长0.35～0.45毫米,体末端尖削,橙黄色。②卵:圆球形,春季产卵呈橙黄色,夏季产的卵呈黄白色。③幼螨:初孵幼螨体圆形、黄白色,取食后为淡绿色,3对足。④若螨:4对足,前期若螨体背开始出现刚毛,两侧有明显墨绿色斑,后
Morphological characteristics Hawthorn spider mite, also known as red spider hawthorn, fire dragon worms. As a worldwide pest, widely distributed in the country, most of the jujube district have occurred. ① into a mite: female into a mite oval body length 0.54 ~ 0.59 mm, winter-type bright red, summer-type dark red. Male adult mite body length 0.35 ~ 0.45 mm, the tip of the body pointed cut, orange-yellow. ② eggs: spherical, spawning in spring was orange, yellow egg white in summer. ③ larvae: newly hatched larvae body round, yellow-white, pale green after feeding, 3 pairs of feet. ④ If the mite: 4 pairs of feet, early mite body began to appear bristles on both sides of the obvious dark green spots, after