对中国东北中生代晚期的长翅目昆虫化石进行采集，着重开展形态学、分类学和系统学研究，丰富其物种多样性。充分利用化石所提供的资料，结合现生类群的形态和分子数据，古今结合，探究绝灭和现生长翅目具有代表性类群的系统发育关系和历史演化过程。对于一些长翅目类群的特殊形态结构（如口器、生殖器、翅脉和色斑等）进行细致的功能形态分析。利用一些具有虹吸式口器的长翅目昆虫（Aneuretopsychidae，Mesopsychidae等）的体表孢粉证据以及一些特殊长翅目类群与当时伴生植物的拟态关系，研究昆虫与植物之间协同演化关系。为恢复和重建长翅目的自然历史提供可靠的材料和依据。

Based on abundant and diverse fossil scorpionflies collected from the upper Mesozoic of northeastern China，the proposed research will focus on the morphology，systematics and phylogeny analyses of Mecoptera, combining with the morphologic and molecular data of extant families and integrating the ancient and modern, to reveal mecopteran phylogenetic relationships and their evolutionary history..For some special mecopterans, we will carry out functional morphology analyses of special structures, such as the mouthparts, genitalia, wing venation and color bands or spots, etc. and conduct comparison studies with modern confamilial taxa. Furthermore, with the help of surface pollen evidence on some special mecopterans with siphonate proboscides (Aneuretopsychidae and Mesopsychidae) and the mimesis relationship with associated plants, we will explore the co-evolution relationship between mecopteran and plants. All these results will provide more fossil records and reliable evidences for elucidation and reconstruction the natural history of Mecoptera.