胃蝇(学名:Gasterophilinae)是一种形似蜜蜂的蝇类。成蝇体表密被黄褐色或黄白色长绒毛。幼蝇红色,前尖后钝,分节,每节常有刺1—2行,寄生于马、驴、骡等的食管、胃、肠处。严重侵袭时能使胃部运动及分泌发生障碍;又能分泌毒素,引起宿主贫血。因幼虫的寄生、钩刺,损伤粘膜,可招致继发性细菌感染。分布于中国的胃蝇,除本种外,尚有赤尾胃蝇(G.haemorrhoidalis)、黑腹胃蝇(G.pecorum)、烦扰胃蝇(G.veterinus)、无刺胃蝇(G.intermis)。
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