柑桔大实蝇(属国内检疫对象),在湖北省宜昌、兴山、秭归等地大量发生,为害柑桔幼果,一般桔果损失10％～20％,严重时达60％～90％。瓜实蝇主要为害瓜果,偶食柑桔,但调查发现柑桔大实蝇分布区往往有其发生。两种实蝇在中胸背板鬃序、前翅和腹部背面形态上存在明显差异,可以快速识别。柑桔大实蝇中胸背板上的肩板鬃、后背侧鬃、小值鬃的对数均为1对,无前翅上鬃;瓜实蝇中胸背板上有肩板鬃2对、前翅上鬃1对,无后背侧鬃和小值鬃;两种实蝇中胸背板上均有前背侧鬃1对、后翅上鬃2对。柑桔大实蝇前翅翅端斑较大,蝙蝠形,前翅有 Citrus Drupe (domestic quarantine object), in Hubei Yichang, Xingshan, Zigui and other places occurred in large numbers, the damage of young citrus fruit, the general loss of 10% to 20% orange fruit, severe 60% to 90% . Fruits and flies mainly harmful fruits, even citrus, but the survey found that the distribution of citrus fruit fly often have its occurrence. Two kinds of fruit fly in the thoracodorsal mane sequence, front wing and abdomen on the back of the form of significant differences, you can quickly identify. The mandarin fruit fly on the thoracic back plate shoulder mane, back malar, small mane pairs of pairs are 1, no forewing on the mane; fruit flies in the chest back plate shoulder mane 2 pairs , A pair of front wings on the bristles, no dorsal and small mane bristles; two kinds of fruit fly in the thoracodorsal anterior dorsal side of the bristle 1, after the wing on the mane 2 pairs. Mandarin Drupe flywings front wings larger, bat-shaped, forewing there