硕蠊科目前包含12亚科，栖息环境多样，卵胎生或胎生，雄性外生殖器结构简单，被认为是蜚蠊目的“高等”类群，也是蜚蠊进化及生物学研究的重要类群，且包含仿生学、生理学、行为学等领域的模式昆虫。但是对于该类群的调查和分类却较为滞后，鲜有专门针对该类群的系统发育分析，亟待对该类群物种多样性水平进行深入调查，弄清我国该类群物种资源，进一步阐释其亲缘关系，厘定存疑分类单元。本项目拟：1) 对我国硕蠊科进行广泛且系统的调查，澄清硕蠊物种多样性水平；2)采用多种分子物种界定方法，使用COI数据对硕蠊科进行物种界定研究，探讨分子数据进行物种界定的可行性；3) 广泛收集世界硕蠊科各亚科的代表物种，使用线粒体基因组数据结合核基因标记18S、28S数据，采用两种方法（ML、BI）对世界硕蠊进行系统发育关系重建，探讨各亚科之间的亲缘关系，厘定存疑分类单元的分类地位，为进一步进行蜚蠊目乃至网翅总目系统发育研究奠定基础。

Blaberidae, comprising 12 subfamilies, is one group with a wide variety of habitats, simple male genitalia structure and reproduction type oviparous or viviparous, which is considered to be the higher level group in Blattodea. It is the crucial group in the study of evolution and biology of Blattodea, including many type materials in the fields of bionics, physiology and behavioristics. However, the investigation and classification of this family are lagging behind and rarely has the phylogenetic study aimed at this group, so it is urgent to conduct an in-depth and systematic investigation on the species diversity levels of this group to further explain their relationship and revise the taxa in doubt. This project intends to 1) investigate the species of Blaberidae widely in China to clarify the level of species diversity of the cockroaches; 2) delimit blaberid species based on the COI data by using four kinds of molecular species delimitation methods and discuss the feasibility of species delimitation by using molecular data; 3) reconstruct the phylogenetic relationship of the world blaberid cockroaches based on the combined data of nuclear genes (18S and 28S) and the mitochondrial genome applying two methods (ML, BI), in order to explore the genetic relationship among subfamilies and revise the taxonomic status of doubtful taxa, which help to further establish the foundation for the phylogeny and evolution for Blattodea and even Dictyoptera.