稻秆潜蝇又称稻秆蝇、稻黄潜蝇,称钻心蛆。属双翅目秆蝇科。幼虫主要危害水稻,也危害小麦、大麦、看麦娘、大看麦娘、游草、稗草、棒头草及鹅观草。该虫危害面积小,造成的损失较小,一直未引起国内外农业科技工作者的高度重视,也很少有稻秆潜蝇危害情况及防治对策的报道。基于此,通过室内饲养和田间调查,掌握该虫的发生危害规律,为大面积指导防治降低损失打下坚实基础。1特征和危害症状1.1形态特征成虫体长2.08~4.15 mm,翅展5.00~6.00 mm,头部鲜黄色有黑色珠状大斑,复眼大,暗褐色。头部背面近基处有一菱形黑斑,胸部背面有3条黑色粗大纵纹, Rice stem flies, also known as rice fly flies, rice leaf flies, called the heart maggots. Diptera Head Muscidae. The larvae mainly endanger the rice, but also endanger the wheat, barley, Amaryllis, big look Aman, grass, barnyard grass, head grass and goose concept grass. The insect damage area is small, causing less damage, has not attracted the attention of agricultural scientists at home and abroad, there are few reports of the dangers of rice stem leaf flies and prevention and control measures. Based on this, through indoor rearing and field surveys, we can grasp the law of occurrence and harm of the insects and lay a solid foundation for guiding and preventing losses in a large area. 1 Characteristics and Harmful Symptoms 1.1 Morphological characteristics Adult body length 2.08 ~ 4.15 mm, wingspan 5.00 ~ 6.00 mm, head bright yellow black beads big spot, complex eyes large, dark brown. The back of the head near the base has a diamond-shaped dark spots, the back of the chest there are three large black vertical stripes,