Wang Yong-Fei, Shi Chao-Fan, Ren Dong, Yang Qiang
College of Life Sciences, Capital Normal University, Beijing, 100048, China.
South China Biodiversity Research Center, School of Life Sciences, Guangzhou University, Guangzhou, 510006, China.
Naturwissenschaften. 2025 Aug 5;112(5):56. doi: 10.1007/s00114-025-02007-w.
Three new species of Mesypochrysa Martynov, 1927: Mesypochrysa paucinervis sp. nov., Mesypochrysa angusta sp. nov. and Mesypochrysa paradoxica sp. nov., are described from the Middle Jurassic Jiulongshan Formation of Daohugou, Inner Mongolia, China. The three species are assigned to Mesypochrysa based on the following characters: costal crossveins simple; two gradate series of crossveins present; MA and MP distally bifurcated; CuA with three to five pectinate branches; CuP distally bifurcated. Mesypochrysa paucinervis sp. nov. can be distinguished from other species of Mesypochrysa by nine RP branches and simple A1. Mesypochrysa angusta sp. nov. can be distinguished from other species by 16 RP branches and five CuA branches. Mesypochrysa paradoxica sp. nov. can be distinguished from other species by the distal position of 2m-cu. In addition, the position of 2m-cu in forewings of Limaiinae and distinguish characters of Mesypochrysa are discussed. The discovery of new fossil species enriches the species diversity of this taxon in the Jurassic, while also providing new evidence for the early evolution of chrysopids.
1927年的Mesypochrysa Martynov属的三个新物种：细脉Mesypochrysa paucinervis sp. nov.、狭翅Mesypochrysa angusta sp. nov. 和奇异Mesypochrysa paradoxica sp. nov.，在中国内蒙古道虎沟中侏罗世九龙山组被描述。这三个物种基于以下特征被归入Mesypochrysa属：前缘横脉简单；有两列阶脉；MA和MP在端部二叉分支；CuA有三到五个栉状分支；CuP在端部二叉分支。细脉Mesypochrysa paucinervis sp. nov. 可通过九条RP分支和简单的A1与Mesypochrysa属的其他物种区分开来。狭翅Mesypochrysa angusta sp. nov. 可通过十六条RP分支和五条CuA分支与其他物种区分开来。奇异Mesypochrysa paradoxica sp. nov. 可通过2m-cu的远端部位置与其他物种区分开来。此外，还讨论了丽蛉亚科前翅中2m-cu的位置以及Mesypochrysa属的鉴别特征。新化石物种的发现丰富了该分类单元在侏罗纪的物种多样性，同时也为草蛉科的早期演化提供了新证据。
