菱角作为一种经济作物,在湖区的湖泊和低洼蓄水区,其种植面积有逐年增多之势,栽种菱角上市时间较长,既可生食又可熟食,经济效益好,很受市场欢迎。在栽种时常遭害虫的危害,如不加防治,菱角叶片会被食得残缺不全或全部食光,或者吸食叶片汁液,使植株生长发育迟缓,严重的整株枯死。菱角莹叶甲。该虫是一种甲虫,雌虫体长5毫米左右,褐色披白色绒毛,头顶后颊部黑色,触角丝状,黑褐色,复眼突出,黑褐色,前胸背板两侧黑色,中 Water chestnut as a cash crop, lakes and low-lying impoundment in the lake area, the growing area of ​​the trend has increased year by year, planting Linguanjiao listing a long time, both raw and cooked food, good economic returns, very welcomed by the market. Planting often victims of pests, such as without control, water chestnut leaves will be eaten incomplete or all food, or smoking leaf juice, so that plant growth retardation, severe whole plant withered. Water chestnut Ye Ying. The insect is a beetle, about 5 mm body length, brown draped white fuzz, black cheeks overhead, filiform, dark brown, compound eyes prominent, dark brown, black on both sides of the front and back