卵形蛛是一类体型很小的（多数种类体长小于2 mm）、自由生活的简单生殖器类蜘蛛，在热带及亚热带地区种类十分丰富。东南亚地区覆盖着茂密的热带森林，是世界上生物多样性及生物特有种类最为丰富的地区之一。在全球25个生物多样性热点地区中，东南亚地区覆盖了4个。然而，东南亚地区的卵形蛛科蜘蛛资源一直没有进行过系统的调查研究，潜在种类十分丰富。本项目旨在对东南亚地区的卵形蛛进行全面的调查研究，主要采用经典分类研究方法，结合使用显微摄影、扫描电镜及手绘图等手段，对已知种类进行全面的分类修订，并描述和报告大量新分类单元；同时，在全面的形态学研究基础上，结合分子数据，对我国西南山地及东南亚地区特有的三窝蛛属团开展深入的系统发育关系研究，厘清属间的形态学界定，验证属的单系性及物种间亲缘关系问题，并结合地质事件及气候变迁等信息，对该属团的起源及分化机制进行科学推断和合理分析。

Oonopidae are very small (usually < 2 mm), free-living, haplogyne spiders, especially rich in tropical and subtropical regions. Covering with dense tropical forest, Southeast Asia is one of the most abundant area in biodiversity and endemic species in the whole world. In the 25 biodiversity hotspots area in the worldwide, 4 of which are belonging to the Southeast Asia. However, the oonopid spider fauna of this region has never been studied systematically. There are a lot of potential new taxa of oonopid spiders awaiting us to discover. In this project, we will carry out a systematic taxonomic research on oonopid spiders of Southeast Asia. Firstly, using classical taxonomic methods, based on the technologies, such as photomicrography, SEM photos and manual drawings, to revise all the known species and describe new genera and new species. Secondly, the project intends to reconstruct the phylogenetic relationships of the Trilacuna genus-group that endemic to Southeast Asia and southwestern mountain area of China based on the morphological and DNA data, to clarify the generic morphological define, to test the monophyly of the genus, and to make scientific inferences and explanation on the origin and differentiation of the genus-group by the combination of the geologic event and climate changes.