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甘薯华叶虫(Colasposoma metallicum,Clark.)俗称甘薯蜩、甘薯龟、夏至蜩、白虫蛆(指幼虫),是浙南山区、半山区甘薯的重要害虫之一。近年来,随着甘薯栽培面积的扩大,耕作制度的改变,虫害面积逐年扩大,为害程度渐趋严重。发生猖獗年分的损失,一般在30～60%,局部地区甚至全无收成。1963年永嘉县的碧莲、岩头、沙头、上塘等区都有发生,其中为害最严重的碧莲区的白泉、田垟、碧莲三个公社,发生面积达5,100多亩,占甘薯种植面积的73%,比1962年扩大45.7%。
Sweet potato leafworm (Colasposoma metallicum, Clark) commonly known as sweet potato 蜩, sweet potato turtle, summer solstice 白, white worm maggot (refers to the larvae), southern mountainous area, Mid-Levels sweet potato one of the important pests. In recent years, with the expansion of sweet potato cultivation area, farming system changes, pest area expanded year by year, the extent of damage is becoming more serious. Losses in the rampant years, generally 30 to 60%, no harvest in some areas. In 1963 Yongjia County, Bilian, Yantou, Shatou, on the pond and other districts have occurred, of which the worst harmed Bilian District, White Springs, Tian 垟, Bi Lin three communes, an area of 5,100 mu, accounting for sweet potato 73% of the area planted, an increase of 45.7% over 1962.