介形类被认为是甲壳动物亚门中物种最丰富的类群之一，但在我国其分类学研究却十分薄弱，其中尤以金星介亚目的分类问题最为突出。我国已记录的160余种金星介中约2/3的报导来自古生物学和生态学领域，其中部分新记录种的描述过于简单，并缺少鉴定可依据的形态特征图，甚至有些新种的模式标本下落不明，少数种仅有裸名，因此无任何分类学意义。鉴于此，本项目基于实验室已有工作，拟通过标本交换及补点采样等方法获得尽可能覆盖我国各水域不同类型水体的标本，应用经典动物分类学方法，确定我国金星介亚目确切的科属种数及它们的地理分布，编制我国金星介亚目动物名录，绘制详尽的种的形态解剖图和地理分布图；同时，选取恰当的形态和分子等性状，应用支序系统学和分子系统学等方法，参考有效的地理分布信息及化石资料，探讨各科属间的系统发育关系。最终综合形态分类学和系统发育学研究结果，制订科学的更为自然的我国金星介亚目分类系统，编制属种检索表。

Ostracods are one of the most diverse groups of living crustaceans, inhabition marine, non-marine and even some semi-terrestrial habitats. The number of living ostracods is estimated to be more than 20,000, of which approximately 8,000 have been described. But living ostracods are still poorly understood in China and in urgent need of taxonomic. More than 160 living species of suborder Cypridocopina have been reported in China, and the suborder is one of the most taxonomically difficult groups among ten suborders of Ostracoda because of error identification (including synonym and homonym), and unscientific classification and ambiguous phylogenetic relationships. Thus, a taxonomic revision of suborder Cypridocopina is urgent and necessary in China. On the basis of our previous work on non-marine ostracods, our project is to collect a sufficient quantity of samples of Cypridocopina to study morphology and distribution of every species by the methods of classical animal taxonomy, and we will have a clear knowledge of species number and distribution in China. Moreover, new checklist of suborder Cypridocopina will be compiled in China and both morphological image and anatomic drawing of every species will be provided. Because the methods of phylogenetic studies are legitimate and supplement each other. Based both on our own research and on our extensive reading of the literature, we will try to select some appropriate morphological and molecular characters to explore phylogenetic relationship in suborder Cypridocopina by the methods of both cladistic and molecular phylogenetic analysis. Finally, a classification system of suborder Cypridocopina will be created based on our results from both morphological classification and phylogenetic relationship.