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甘薯华叶虫Colasposoma metallicum Clark,床鞘翅目,叶(虫甲)科,农民称此成虫为“红苕绿绿虫”、“小绿绿虫”、“红苕金花红虫”等。称幼虫为“小老母虫”、“老母虫”、“牛屎虫”、“腬虫”、“红苕蛀虫”、“红苕钻心虫”等。该虫为南充、达县、绵阳、内江、江津等专区危害甘薯最严重的害虫;省内其他专区亦局部发现。湖南、浙江省等也有危害。 甘薯华叶虫在薯苗和薯块的整个生长期中均为害,成虫害薯苗的腋芽、嫩梢、叶柄、叶脉及茎蔓的韧皮组织,致使养分不能运输,经日晒即变黑枯死(图1)。
Colasposma metallicum Clark, Coleoptera, leaf (insect) families, farmers call this adult “red green moth”, “green mulching”, “red mulberry red flower bug” and so on. The larvae are called “small old mother insect”, “old mother insect”, “cow shit worm”, “pinworm”, “red grub borers”, “red grub bore worms” and so on. The insects for Nanchong, Daxian, Mianyang, Neijiang, Jiangjin and other districts endanger the most serious pests of sweet potato; other special areas are also found in the province. Hunan, Zhejiang Province, also have harm. Sweet potato leafworm in potato seedlings and tubers throughout the growing period are harmful to adult insect seedling axillary buds, tender shoots, petiole, veins and stems bast phloem tissue, resulting in nutrients can not be transported by the sun that is black Withered (Figure 1).