我国粟灰螟和二点螟有下列差异,其一,形态特征的差异,粟灰螟成虫个体较小,前翅黄白色,外缘7个小黑点,中室有一个不明显的黑点。二点螟成虫个体较大,前翅灰黄色,外缘7个小黑点,多数有亚外缘点列,中室点列明显清楚,多数雌螟有一个黑点,多数雄螟有二个黑点;其二,为害作物不同,粟灰螟分布在北方杂粮产区,主要为害粟等,二点螟分 Myzus persicae and two-point borer have the following differences, first, the morphological differences, the individual adult smaller corn borer, yellow-white forewings, the outer edge of seven small black spots, in the room there is an obvious black spots. Larvae borer adult larger, gray-yellow forewing, the outer edge of seven small black spots, most of the outer margin of the column, the middle point of the column clear, most of the female have a black spot, most male borer two black Point; Second, different crops for harm, scattered in the northern corn borer cereals production areas, mainly for millet, etc.,