This paper describes three new species of the genus Pegomya from Yunnan province, China: P. acisophalla sp. nov., P. cricophalla sp. nov. and P. lageniforceps sp. nov. All type specimens are deposited in the Institute of Entomology, Shenyang Normal University, Shenyang.%本文记述采自云南省泉蝇属3新种.1.分布于云南省泸水片马的尖阳泉种蝇Pegomya acisophalla sp.nov.,该种近似于四川产的黄前基泉蝇Pegomya flaviprecoxa Li et Deng,1983,但新种雄额宽于前单眼,侧颜等于触角宽,最长芒毛短于芒基粗;中足和后足基节黄色,后胫前背鬃3;第五腹板突立;阳茎端阳体和侧阳体等长,侧尾叶端部较宽大,表面有皱纹.2.分布于云南泸水片马的环阳泉蝇Pegomya cricophalla sp.nov.,该种近似毛笋泉蝇Pegomya phyllostachys Fan,1964,但新种雄尾器特殊,侧阳体呈环状,前阳基侧突单纯,后阳基侧突具小分支,第五腹板侧叶除基部具赘叶外,在端部具骨化的赘叶,其边缘具小齿.3.分布于云南泸水片马的葫叶泉蝇Pegomy lageniforceps sp.nov.,该种近似黄前基泉蝇Pegomya flaviprecoxa Li et Deng,1983,但新种雄性触角淡棕色,侧颜约等于触角宽,颊高为侧颜宽的2倍;小盾端部带褐色;翅脉淡棕色;中足后足基节黄色,中胫后鬃3,后股中部具2～3根后腹鬃,后胫前背鬃3;雄性尾器不同,后阳基侧突前枝的端部为菱形,侧尾叶端部后面观略宽大,肛尾叶近葫形,阳体的端阳体较短而细.模式标本保存于沈阳师范大学昆虫研究所.
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