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一、发生及为害情况 “黑蜘蛛”Petrobia Latens(Miiller)属蜱螨目四爪螨科,是新疆棉花苗期新发现的一种害虫。该虫於1955年在焉耆区发现为害棉花,因当时发生面积较少,为害亦不严重,故未引起重视。1956年该虫即迅速扩大蔓延,为害成灾。受害棉田达3,000亩以上,其中严重被害田达1,000余亩。舆此同时,在北疆玛纳斯河棉区,南疆库尔勒、库车等地棉田,亦发现为害。
First, the occurrence and damage situation “black spider” Petrobia Latens (Miiller) is an acarina Tettigonidae, Xinjiang cotton seedling newly found a pest. The insect was found to be harmful to cotton in Yanqi District in 1955 because less area was affected and harm was not serious. Therefore, no attention was paid to it. In 1956 the worm rapidly expanded and spread, causing disaster. The affected cotton fields amounted to more than 3,000 mu, of which over 1,000 mu were severely victimized. At the same time, the Manas River cotton area in the northern part of Xinjiang, Korla in southern Xinjiang, Kuche and other cotton fields, but also found harm.