缟蝇科成、幼虫主要为腐食性和菌食性，对生态环境变化敏感，是陆生生境变化评价的指示生物之一；部分属的成虫可访花，有助于植物传粉；少数种类的幼虫被发现于动物尸体上，有潜在的法医昆虫应用价值。我国同脉缟蝇亚科昆虫资源丰富，生境多样化，是世界缟蝇科区系研究的重要组成部分。世界已知28属700余种，我国已知6属180余种。本项目在申请者的前期研究基础上，对东北区、蒙新区、青藏区进行重点采集，辅以华中区、西南区、华南区的补充采集，对我国已知属、种进行系统的分类修订和描记新属、种；对模式标本和非模式标本进行整体和局部特征拍照，组合寄主植物、生境照片，雌雄外生殖器图和地理分布图，构建我国同脉缟蝇亚科Lucid key鉴定平台。该研究结果对我国缟蝇科昆虫资源保护和利用研究具有重要的意义。

Lauxaniidae is an important ecological and economic group as an indicator of the enviromental changes in ghe ecological system of land. Adults and larvae are recorded as fungal grazers and detritovores in leaf litter, decaying vegetation and birds'nests. Some of them visit flowers and benefit to plant pollination. A few of larvae were found on the dead animals, with the potential value of forensic insects.China is one of the richest countries with generic and specific diversity and habitat diversity of Homoneurinae (Diptera, Lauxaniidae)in the world. There are more than 700 species 28 genera in the world and more than 180 species 6 genera in China. The project's purpose is to revise the known genera and species, describe new genera and species by the collections from different regions in China,take photos for specimens, habitats and host plants,illustrate figures of male genitalia, make distribution map,and build a lucid identification platform of Homoneurinae. It is an importnant and necessary to protect and utilize the diversity of the lauxaniids in China.