New fossil eccoptarthrids (Coleoptera : Curculionoidea) from the Yixian formation of western Liaoning, China

作者：Liu Ming; Ren Dong^*

来源：Science in China - Series D: Earth Sciences , 2007, 50(5): 641-648.

DOI：10.1007/s11430-007-0030-z

• fossil
• weevil
• Eccoptarthridae
• new taxa
• Late Jurassic
• early cretaceous
• Yixian formation
• Liaoning

One new genus and three new species of the weevil family Eccoptarthridae (Curculionoidea), Leptocar polychaetus gen. et sp. nov., Abrocar macilentus sp. nov., Cretonanophyes punctatus sp. nov., are described and illustrated. They pertain to the Upper Jurassic or Lower Cretaceous Yixian Formation of western Liaoning Province, China. The host plants to the living eccoptarthrids and the floras in Yixian Formation indicate that those archaic eccoptarthrids possibly lived on conifers with a phylogenetic closeness to Cupressaceae. Besides, the early diversification of eccoptarthrids is discussed: originated in Central or East Asia in the Late Jurassic, spread into Western Europe and South America during the Early Cretaceous, underwent a dramatic decline after the Early Cretaceous which likely was caused by competitive pressure and the displacement of their host plants.

• 出版日期2007-5
• 单位首都师范大学