来自中国中侏罗世晚期的两种新的（昆虫纲，长翅目，小蝎蛉科）物种。
Two new species of (Insecta, Mecoptera, Nannochoristidae) from the late Middle Jurassic of China.
作者信息
Cao Yizi, Lin Xiaodan, Shih Chungkun, Ren Dong
机构信息
College of Life Sciences, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing 100048, China Capital Normal University Beijing China.
Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, China Hainan University Haikou China.
出版信息
Zookeys. 2022 Jun 24;1108:175-188. doi: 10.3897/zookeys.1108.85378. eCollection 2022.
Two new species of Sukatsheva, 1985, and , are described and illustrated from the latest Middle Jurassic Jiulongshan Formation of Daohugou, Inner Mongolia, China. Based on fossil specimens with wings, these new species are established and assigned to by a combination of three forewing characters: Sc with three branches ending at C, the four-branched Rs (R to R) originating distad of M (vs. three-branched RS (R undivided) in all other fossil and extant nannochoristids), and M forking with four branches; and a hind wing character of Sc simple and short, terminating at C well before the pterostigma. Furthermore, this is the first report of long and robust setae present on the anal veins of the forewing for in fossil Nannochoristidae.
本文描述并展示了采自中国内蒙古道虎沟中侏罗世晚期九龙山组的1985年苏氏叶肢介属的两个新物种。基于带翅化石标本，通过前翅的三个特征组合建立了这些新物种并将其归入苏氏叶肢介属：肩脉（Sc）具三条分支并在翅前缘脉（C）处结束，四分支的径脉（Rs，从R到R）起源于中脉（M）远心端（相比之下，所有其他化石和现生的小叉肢介科昆虫的径脉为三分支，R未分叉），中脉（M）分叉为四条分支；以及后翅特征，即肩脉（Sc）简单且短，在翅痣之前很早就在翅前缘脉（C）处结束。此外，这是在化石小叉肢介科昆虫中首次报道在前翅臀脉上存在长而粗壮的刚毛。
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