New Jurassic Hangingflies (Insecta: Mecoptera: Bittacidae) from Inner Mongolia, China.
New Jurassic Hangingflies (Insecta: Mecoptera: Bittacidae) from Inner Mongolia, China.
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DOI：
10.11646/zootaxa.4067.1.5
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发表时间：
2016-01
期刊：
影响因子：
0.9
通讯作者：
Sulin Liu;Chungkun Shih;A. Bashkuev;D. Ren
中科院分区：
文献类型：
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作者：
Sulin Liu;Chungkun Shih;A. Bashkuev;D. Ren
文章题目苦味酸一新属，Composibittacus gen. nov.，其中2个新种为C. bipunctatus gen. et sp. nov.和二点斑拟步行虫C. reticulatus sp. nov.，和直颊螺属一新种，O.斑节蜱属新种，产于内蒙古道虎沟中侏罗统九龙山组。新属Composibittacus gen. nov.具有独特的翅型特征，如R1和R2之间以及R1和R2+3之间的5条翼柱头横脉，以及一个细长的翼柱头区，使其与所有已知的Bittacidae属区别开来。与其他种的区别在于：M在前翅和后翅上有6个分支，在C和Sc之间有2个横脉，在前翅上有2个翼气门横脉。此外，O. maculosus sp. nov.在前后翅上有浅色或白色斑点。本文报道了新属Composibittacus gen. nov.和O. maculosus sp. nov.的发现，加深了我们对早期悬雍垂蝇多样形态特征的理解。此外，基于O. nov.和Juracimbrophlebia ginkgofolia Wang，Labandeira，Shih & Ren 2012（Cimbrophlebiidae），我们提出与银杏植物的叶模仿和互惠共生可能存在于Bittacidae中，就像在Cimbrophlebiidae中提出的那样。
A new bittacid genus, Composibittacus gen. nov., with two new species, C. bipunctatus gen. et sp. nov. and C. reticulatus sp. nov., and a new species of Orthobittacus Willmann 1989, O. maculosus sp. nov., are described from the latest Middle Jurassic Jiulongshan Formation of Daohugou, Inner Mongolia, China. Composibittacus gen. nov. has unique wing characters, such as five pterostigmal crossveins between R1 and R2 and R1 and R2+3 and an elongated pterostigma area, which distinguishes it from all other known genera in Bittacidae. Orthobittacus maculosus sp. nov. differs from other species of Orthobittacus by a combination of the following wing characters: M with six branches in forewings and hind wings, two crossveins between C and Sc, and two pterostigmal crossveins in the forewing. In addition, O. maculosus sp. nov. has light-colored or white spots on the fore- and hind wings. These new venational characters of Composibittacus gen. nov. and O. maculosus sp. nov. enhance our understanding of the diverse morphological characters of early hangingflies. Furthermore, based on the striking similarity of the wings of O. maculosus sp. nov. and Juracimbrophlebia ginkgofolia Wang, Labandeira, Shih & Ren 2012 (Cimbrophlebiidae), we propose that leaf mimesis and mutualism with ginkgo plants might have been present in the Bittacidae, as has been proposed in the Cimbrophlebiidae.