基于形态和分子数据的中国季风温冰川区草螟亚科分类

气候变暖已成为全球最受关注的环境问题之一。高海拔地区的变暖速率是全球平均水平的2-3倍，尤其中低纬度温冰川区对气候变暖异常敏感，物种多样性易遭威胁。中国是中低纬度温冰川最多的国家这一事实，及申请人前期研究对季风温冰川区螟蛾独特物种多样性的揭示驱使我们去系统地开展该冰川区草螟亚科分类学研究。草螟亚科隶属于鳞翅目中物种多样性最丰富的类群之一 — 螟蛾总科，是世界性分布的自然单系类群。中国该亚科既往研究多集中于中低海拔地区，而在高海拔、生存环境独特的季风温冰川区鲜有报道。至今为止，草螟亚科分类主要基于形态性状，但物种内形态变异和物种间表型趋同等给其分类学研究带来了较大的困难和挑战。本项目将形态与分子数据整合应用于中国季风温冰川区草螟亚科分类，澄清分类学问题，发现和记述新的和隐存的分类单元，揭示其独特的物种多样性，为害虫鉴别、生物多样性保护、生态环境指示和昆虫地理区系等研究提供科学依据。

Climate warming has become one of the top environmental concerns. Warming in the high-elevation region is occurring at two to three times the rate of the global average. The low- to mid- latitude temperate glacier regions are unusually sensitive to the warming, the species diversity is vulnerable to threats. The fact that China has the most low- to mid- latitude temperate glaciers, as well as the monsoonal temperate glacier region of China with exceptional pyraloid species diversity revealed by the applicant in previous research, which propel us to carry out taxonomic study on the Crambinae of the glacier region systematically. The subfamily Crambinae is affiliated with Pyraloidea, one of the most species diverse superfamilies of Lepidoptera. It is a cosmopolitan and natural monophyletic group. In China, the previous study of the subfamily was mostly focused on the low- to mid- elevation regions, while the high-elevation and unique living environment monsoonal temperate glacier region was rarely reported. To date, the taxonomy of Crambinae is mainly based on morphological characters. But some taxonomic problems, such as the intraspecific morphological variances and the interspecific phenotypic convergences etc., bring biggish difficulties and challenges to the taxonomic study. Based on the integrated application of morphological and molecular data, this project aims to carry out taxonomy of the Crambinae from monsoonal temperate glacier region, China, resolve the taxonomic difficult problems, discover and describe new and cryptic taxa, and reveal the exceptional species diversity. The results will provide scientific basis for the research concerned about pest identification, biodiversity conservation, ecological environment indicator and insect fauna etc.