东洋区凹胫跳甲属的分类及系统发育研究(鞘翅目：叶甲科：跳甲亚科)

Chaetocnema belongs to subfamily Alticinae, Chrysomelidae, Coleoptera, who is one of the largest genera of Alticinae in the world and few flea beetle genera with worldwide distribution. Most species of this genus can feed on agricultural crops, and many adults spread the pathogen of plant disease, thus it plays an important role in economic aspects and pest control. Comparing with other faunae, no detailed revisionary work on this genus has been carried our in Oriental region, and also a great number of species are still undermined and undescribed in this region. In addition, the type species of Chaetocnema is controversial and the phylogeny of this genus in species level is still not started yet . So based on the mentioned above, the confirmation of generic characters, revision on the species and reconstruction of phylogeny in species level need to be undertaken urgently. In summary, the taxonomic revision and phylogeny of the genus Chaetocnema will be mainly addressed in this project, the comprehensive knowledge of this genus will be tried to achieved, also the available data will be provided for the future revision work of this genus in worldwide, which can also speed the profounded research on differentiating alticina genera groups, and key evidences to resolve the systematic position of Alticinae will be expected to find out.

凹胫跳甲属Chaetocnema隶属于鞘翅目Coleoptera 叶甲科Chrysomelidae 跳甲亚科Alticinae，是跳甲亚科中种类最多的属之一，同时也是跳甲亚科中少数全世界分布的属之一。本属多数种类为农业害虫，因此对其开展系统学研究具有重要的生产价值及经济意义。本属目前已开展的研究均为区域性工作，相对其他动物地理区而言，东洋区尚有大量的种类有待发现及描述，同时也缺少系统的区系研究和全面的修订工作。此外，该属的属模式种尚没有一致的观点，其属内的系统发育关系至今仍为空白，因此亟需开展凹胫跳甲属的属征确认、种类系统厘定及属内系统发育关系的研究。本项目旨在通过立项，系统开展东洋区凹胫跳甲属种类修订工作及属内系统发育分析工作，实现对该属全面、准确的认识，为本属世界性的修订工作提供重要资料；促进对跳甲类属组工作的深入研究，以期对跳甲亚科分类地位的解决提供重要依据。

中国已记录跳甲亚科昆虫（鞘翅目Coleoptera 叶甲科Chrysomelidae 跳甲亚科Alticinae）104属、860余种；大多数跳甲种类幼虫食根、成虫食叶，因此有许多种类为重要的经济害虫。凹胫跳甲属Chaetocnema是跳甲亚科中种类最多的属之一，同时也是跳甲亚科中少数全世界分布的属之一。本属多数种类为农业害虫，因此对其开展系统学研究具有重要的生产价值及经济意义。本项目通过立项，系统开展东洋区凹胫跳甲属种类修订工作及属内系统发育分析工作，实现对该属全面、准确的认识；总共修订中国及东洋区凹胫跳甲102个有效种，提出26个新种 (已发表6个)；提出12个新异名、1个同名关系、2个地位变动；并将2个种排出中国区系。有效种的模式检视率达到80%左右。通过本项目的实施，为中国及周边国家地区的跳甲物种鉴定以及相关学科的研究提供了基础理论依据；东洋区的修订工作同时也为本属世界性的修订工作提供重要资料；本研究也促进了对跳甲类属组工作的深入研究，为跳甲亚科分类地位的解决提供重要依据。