摘要
从12目具翅昆虫中选出16个代表种,对其后足基骨片的形态特征在不同类群中的衍变进行分析比较,据此构建反映下列初步进化关系的系统树:[Ephemeroptera+(Odonata+Neoptera)]+[Plecoptera+(Megaloptera+Neuroptera+(Orthoptera+(Hemiptera+(Coleoptera+(Mecoptera+Lepidoptera+(Hymenoptera+Diptera))))))]。该树的关系表明,古翅类(Palaeoptera)与新翅类(Neoptera)的界限分明,Ephemeroptera与其他具翅昆虫类群的关系较远,而Odonata与其它具翅昆虫类群的关系较近;探讨了后者之间的分类地位和进化关系,对现有分类系统的一些地方提出质疑。
Sixteen representative species of Pterygota are selected to analyse the development of morphological characteristics of metathoracic pleural sclerites in different taxa. A well-resolved cladogram of preliminary evolutionary relationships is produced with the topology： [Ephemeroptera ＋ （Odonata ＋ Neoptera）]＋ [Plec- optera＋（Megaloptera＋Neuroptera＋（Orthoptera＋（Hemiptera＋（Coleoptera＋（Mecoptera ＋Lepidoptera＋（Hymenoptera＋Diptera））））））]. This analysis indicates that Palaeoptera and Neoptera are clearly separated. Ephemeroptera is more distantly related to Neoptera while Odonata has a closer relationship. The taxonomic status and evolutionary relationships of Neoptera are discussed and some arguments are made that are in conflict with the current classification system.
基金
国家自然科学基金项目(30630010)资助
关键词
具翅昆虫
后胸足基骨片
比较形态学
系统发育分析
Pterygote insects
Metathoracic pleura! sclerites
Comparative morphology
Phylogeny
