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大理窃蠹是一种蛀食苎麻的重要仓库害虫.受该虫为害的苎麻原麻,轻则呈现许多孔眼、缺刻和蛀断纤维,致使纤维残缺不齐,降低品质;重则被蛀食成糠渣粉末状,丧失利用价值.另外,由于幼虫群集在麻捆内蛀食,虫体排泄物与残渣蛀粉混杂在一起,引起霉变.据调查,存放2～3年的麻往往为害较重.同时被害仓库以靠墙四周,近门窗、缝隙处的中下层麻多发生为害,成虫喜从较紧的扎绳处蛀孔,并在蛀孔内产卵.为害严重的,一捆麻内有数千条甚至有两万多条幼虫.目前,由于苎麻价格持续低走,导致大量苎麻积压,这一时期是该虫发生为害的最佳时期,所以必须引起高度警惕.
Dali beetle is an important insect pest eating ramie ramie affected by the pest of the original hemp, ranging from showing a lot of holes, nicks and decay fiber, resulting in fiber incomplete, reduce the quality; weight was eaten into In addition, due to the larvae cluster in the hemp bundle eating, insect feces and residue moth mixed together, causing mildew.According to the survey, storage of 2 to 3 years of hemp often harm than Weight.At the same time the victim warehouse to the wall around, near the windows and doors, cracks in the middle and lower layers of Ma occurred more harm, adult hi from the tighter Zhashing Department of wormhole, and spawning in the wormhole. Serious, a bundle of hemp There are thousands or even more than 20,000 larvae present, because ramie prices continue to go low, resulting in a large backlog of ramie, this period is the best period for the pest damage, it must be highly vigilant.