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板栗红蜘蛛(又名针叶小爪螨),寄主只有板栗一种。以若虫、成虫危害叶片,严重时使全树叶片枯焦,影响了板栗树的正常发育和产量。形态识别成虫:雌成虫椭圆形,腹部红褐色,腹部刚毛粗大,毛基部有一黄白色瘤。雄成虫腹部近三角形,腹部较尖,绿褐色。若虫:初孵幼虫乳白色,取食后黄绿色。卵:越冬卵扁圆形,暗红色。夏卵乳黄色。
Chestnut red spider (also known as needle small claw mites), the host only a chestnut. In order to nymphs, adults harm leaves, serious when the whole tree leaves scorching, affecting the normal development and yield chestnut trees. Morphological identification adult: female adult oval, abdomen reddish-brown, abdomen bristles, hairy base with a yellowish white tumor. Male adult belly near the triangle, the abdomen more pointed, greenish brown. Nymphs: newly hatched larva milky white, green yellow after eating. Eggs: wintering eggs oval, dark red. Summer egg yolk yellow.