马铃薯甲虫 Leptinotarsa decemlinea-ta(Say)原在美国西部半沙漠区取食野生茄科茄属 Solanum rostratum,对人类无关紧要。随着栽培马铃薯的传入使它们得到丰足的食料,繁殖很快,迅速传播开来,造成惊人的损失。1874年此虫就传到美国东部大西洋沿岸各州和加拿大东南部。当它扫荡北美后第13 The potato beetle Leptinotarsa ​​decemlinea-ta (Say) was originally fed on the solanum Solanum rostratum in the semi-desert area of ​​the western United States, which is immaterial to humans. With the introduction of cultivated potatoes so that they get enough food, rapid propagation, spread quickly, resulting in an alarming loss. In 1874 the worm reached the states of the eastern Atlantic coast of the United States and southeastern Canada. When it raided North America after 13th