苜蓿广肩小蜂(Bruchophagus Gibbus Boh)是危害紫花苜蓿种子的一个重要害虫。我区各盟所有苜蓿种植地区都能见到它的危害,但西部区比东部区危害较重,如伊盟杭锦旗、呼市托县等地区早期成熟的紫花苜蓿种子被害率一般在28～32.5%,而西苏旗、东乌旗为10～15%。苜蓿广肩小蜂也称苜蓿实蜂,属膜翅目,广肩小蜂科 Bruchophagus Gibbus Boh is an important insect pest that affects alfalfa seeds. All our allies alfalfa planting areas can see its harm, but the western region harder than the eastern region, such as Yi League Hangjinqi, Hohhuan Tuo County and other regions of the early maturing alfalfa seed damage rate is generally 28 ~ 32.5%, while the Western Su Qi, East Wu flag is 10 to 15%. Alfalfa wide shoulder bee also known as alfalfa real bee, is a Hymenoptera, broad shoulders small bee families