A New Xyelydid Sawfly from the Early Cretaceous of China (Hymenoptera: Xyelydidae)
A New Xyelydid Sawfly from the Early Cretaceous of China (Hymenoptera: Xyelydidae)
复制标题
中国早白垩世锯蝇一新种（膜翅目：锯蝇科）
DOI：
10.2317/jkes120806.1
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发表时间：
2013-01-01
影响因子：
0.5
通讯作者：
Ren, Dong
中科院分区：
文献类型：
--
作者：
Gao, Taiping;Engel, Michael S.;Ren, Dong
本文描述了采自中国东北早白垩世义县组的新属新种Novalydacretacica（Symphyta：Pamphilioidea：Xyelydidae）。该新种与该科其它种的区别在于触角较粗，肋室窄，Rs第一横坐标短，翼柱头硬化。该物种是该科最年轻的物种，并将谱系延伸到白垩纪时期。
Novalyda cretacica, new genus and new species ("Symphyta": Pamphilioidea: Xyelydidae), is described based on a unique male from the Early Cretaceous, Yixian Formation of northeastern China. The new species differs from others in the family by its relatively thick antenna, narrow costal cell, short first abscissa of Rs, sclerotization of the pterostigma. The species is the youngest occurrence of the family and extends the lineage into the Cretaceous period.