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马铃薯甲虫属发源于世界西半球,当煎除马铃薯甲虫 Leptinotarsa decemlineata(Say)已广泛传入欧洲和亚洲之外,其他种的分布依然局限于美洲大陆,其分布范围北至加拿大南部,南至秘鲁和巴西,迄今由美洲共记录41个种。马铃薯甲虫属的鉴别特征如下:前足基节窝开放,爪简单,下颚须末节端部截形,短于其前一节(图3:4～5),中胸腹板平坦,头缩入前胸,触角11节,端部几节通常膨大,前胸背板宽而隆起,鞘翅隆起遮盖腹部。
The genus of potato beetles originates in the western hemisphere. When the species of Leptinotarsa decemlineata (Say) is widely spread to Europe and Asia, the distribution of other species is still limited to the continental United States. Its distribution ranges from north to southern Canada and to Peru and So far, 41 species have been recorded by the Americas. The identification characteristics of the potato beetle are as follows: anterior basal ganglia fossa open, simple claw, the distal end of the mandible truncated truncated, shorter than the previous section (Figure 3: 4 ~ 5), the mid-thoracic abdominal plate is flat, Chest, antennae 11, the end of a few sections usually swollen, chest and back wide and uplift, sheath wings uplift covering the abdomen.