Two new species of Nevania (Hymenoptera: Evanioidea: Praeaulacidae: Nevaniinae) from the Middle Jurassic of China

Abstract

Two new species of Nevania Zhang & Rasnitsyn 2007, Nevania perbella sp. nov. and Nevania aspectabilis sp. nov., are described and illustrated. They are assigned to Nevania based on their unique morphological characters: forewing venation complete; 2A complete; metasoma with first and second segments long and tube-like. A key to the known species of Nevania is provided. These fossils, collected from the Jiulongshan Formation (Middle Jurassic) of Daohugou in Inner Mongolia, China, broaden the known diversity of this genus in mid-Mesozoic ecosystems.

本文描述和图示了Nevania Zhang & Rasnitsyn 2007的两个新种: Nevania perbella sp. nov. 和 Nevania aspectabilis sp. nov.。它们被归类为Nevania, 是基于其独特形态特征: 前翅叶脉完整; 2A完整; 第一和第二节长管状。本文还提供了Nevania的一个已知种的关键特征。这些化石采自中国内蒙古道虎沟的九龙山组 (中侏罗世), 拓宽了该属中生代中期生态系统多样性。

Key words:

• Praeaulacidae
• wasps
• fossil
• petiole
• Daohugou
• Middle Jurassic

Acknowledgements

We sincerely thank the editor Dr Stephen McLoughlin and the reviewers, Dr Alexandr P. Rasnitsyn and Dr Denis J. Brothers, for their critical review of the manuscript. We are grateful to Taiping Gao, Hua Feng, Shu Li, Qiang Yang, Yongjun Li and Yingying Cui (College of Life Sciences, Capital Normal University) for their kind assistance. This research is supported by the National Natural Science Foundation of China (No. 31071964, 40872022), Beijing Natural Science Foundation Program (No.5082002), Beijing Postdoctoral Research Foundation (Grant 2011ZZ-36), and Key Project of Beijing Municipal Commission of Education.