中国蜻蜓目昆虫的起源、演化及其在古翅类系统进化上的意义

昆虫翅的发生是昆虫进化史上最为重要的事件之一。古翅类作为有翅昆虫中最原始的类群，对研究有翅昆虫起源和早期演化有重要意义。本研究拟选择古翅类关键类群之一蜻蜓目为研究对象，以我国得天独厚的化石资源为基底，通过查明我国蜻蜓目昆虫3亿年来化石种类、时空分布及演替规律，建立其演化组合序列。在特征分析中充分发掘化石材料蕴含的信息，结合现生类群的特征，研究蜻蜓目中较有代表性的科级类群系统发育关系。对翅脉、翅基骨片、翅位和附肢等关键构造特征深入研究，将对解决古翅类是否单系性这一重大生物学问题起到积极作用，为古翅类系统演化乃至有翅类昆虫起源和早期演化研究提供可靠的地史材料和理论依据。

The occurrence of wings is one of the most important event in evolution of insects. Palaeoptera, as the most primitive group of wing insects, is the key group on studying wing-insect origin and early-stage. Odonatoptera was chosen in this study because of its importance within the Palaeoptera. This study will focus on the abundant fossil materials from china, aiming to find out the Odonatoptera's space-time distribution and evolutionary series. Characters from both extinct and extant species will be researched to find out the phylogenetic evolution of representative families. Key characters, such as veins, wing base, wing position and appendages will be delved in. All these work may provide informations for understanding origin and early development of Palaeoptera and for resoving problematic splits in the tree of insects.