Earliest true moth lacewing from the Middle Jurassic of Inner Mongolia, China
Earliest true moth lacewing from the Middle Jurassic of Inner Mongolia, China
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DOI：
10.4202/app.00259.2016
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发表时间：
2016-12-01
影响因子：
1.8
通讯作者：
Wang, Yongjie
中科院分区：
文献类型：
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作者：
Zheng, Bingyu;Ren, Dong;Wang, Yongjie
草蛉新蛾 Guithone bethouxi gen.等11月，描述于中侏罗世九龙山组（中国内蒙古）。该类群的特征是身体健壮，头部缩回到前胸背板下，肋间隙显着（底部扩大，远端缩小）。在此，我们提出了基于现存类群的草蛉科（蛾草蛉、巨型草蛉和山地草蛉）谱系的详细定义，以澄清该分类单元内化石物种的系统学。比较表明 Guithone Bethouxi gen。等十一月毫无疑问代表了最早的真正的草蛾蛾，这意味着草蛉科中的谱系分化一定发生在中侏罗世之前。此外，新属具有一些特殊的脉络特征，例如不循环的肱脉和径向扇区的简化交叉脉络，代表了伊索尼达科进化中的一个重要的中间类群。
A new moth lacewing Guithone bethouxi gen. et sp. nov., is described from the Middle Jurassic Jiulongshan Formation (Inner Mongolia, China). This taxon is characterized by robust body, head retracted under pronotum, and remarkable costal space (expanded basad, narrowed distad). Herein, we propose a detailed definition of the lineages of Ithonidae sensu lato (moth lacewings, giant lacewings, and montane lacewings) based on extant groups in order to clarify the systematics of fossil species within the taxon. The comparison shows that Guithone bethouxi gen. et sp. nov. unquestionably represents the earliest true moth lacewing, implying that lineage differentiations within Ithonidae sensu lato must have taken place before the Middle Jurassic. Furthermore the new genus possessing some particular venation characters, such as irrecurrent humeral veinlet and simplified crossveination in radial sector, represents an important intermediate group in the evolution of Ithonidae sensu lato.