Study On The Jurassic Fossil Raphidiomimidae From Northeast China

Eastern Inner Mongolia and Western Liaoning are located in the northeast part of China. It has preserved comprehensive deposits of long geological history, yielding abundant fossils. This area is one of the most typical areas in the world, with well-developed continental Mesozoic sediments. Most notable fossils from this area are from the terrestrial Jurassic especially in Jiulongshan Formation of Middle Jurassic and Yixian Formation of Late Jurassic, where abundant insect such as snakeflies, beetles, cockroaches and other insects have been discovered, providing important evidence for the study of the origin and early evolution of insects.Raphidiomimidae are considered for the first attempt of carnivory among cockroaches, representing an evolutionary blind branch. This family maybe a small group, for only three species belonging to two genera are described before 2006.In the present paper, the researching history on Blattaria are given. Secondly, the important critical characteristics of fossil Raphidiomimidae are summarized and biology are reviewed. Then a taxonomic work on Jurassic Raphidiomimidae is presented. At last the tribes of Raphidiomimidae is discussed.All the materials are collected in Jiulongshan Formation in the Eastern Inner Mongolia, China and deposited in the College of Life Science, Capital Normal University in Beijing, China.