危害鹅掌楸的中国巨基叶蜂属(膜翅目:叶蜂科)一新种  

A New Species of Megabeleses Takeuchi(Hymenoptera:Tenthredinidae),A Defoliator of Liriodendron chinense in China

作　　者：李泽建 刘萌萌 牛耕耘 魏美才 Li Zejian;Liu Mengmeng;Niu Gengyun;Wei Meicai(Provincial Postdoctoral Research Station Scientific Research and Management Center of East China Medicinal Botanical Garden Lishui Forestry Bureau, Zhejiang Province Lishui 323000;College of Ecology,Lishui University,Lishui 323000;College of Life Science,Jiangxi Normal University,Nanchang 330022)

机构地区：[1]浙江省丽水市林业局华东药用植物园科研管理中心省级博士后科研工作站,丽水323000 [2]丽水学院生态学院,丽水323000 [3]江西师范大学生命科学学院,南昌330022

出　　处：《林业科学》2022年第4期104-109,共6页Scientia Silvae Sinicae

基　　金：国家自然科学基金项目(31970447,31672344);百山祖国家公园科学研究项目(2021KFLY08)。

摘　　要：记述采自浙江、危害鹅掌楸的巨基叶蜂属(膜翅目:叶蜂科)一新种:凤阳巨基叶蜂Megabeleses fengyangshana Li,Liu&Wei,sp.nov.。该种幼虫取食木兰科的鹅掌楸叶片,当虫口密度较大时,可将寄主叶片蚕食殆尽,影响植株生长,对寄主产生严重危害。新种与鹅掌楸巨基叶蜂M.liriodendrovorax G.Xiao,1993形态差别很小,除阳茎瓣构型有所不同外,新种的前翅2Rs室具明显的翅疤,中胸前侧片刻点较粗密等,与后者稍有不同,但新种与鹅掌楸巨基叶蜂在线粒体基因组蛋白质编码基因上存在显著差异,其中atp6、atp8、cob、cox1、cox2、cox3、nad1、nad2、nad3、nad4、nad4l、nad5、nad6序列的P距离分别达到11.1%、13.6%、10.3%、7.6%、6.5%、7.0%、6.4%、11.6%、7.4%、7.5%、5.2%、6.4%、7.2%。编制了巨基叶蜂属世界已知种类分种检索表。本研究为该种有害生物的鉴定、监测与防治工作奠定了基础。In this paper,a new species of Megabeleses fengyangshana Li,Liu&Wei,sp.nov.(Hymenoptera:Tenthredinidae),collected from Zhejiang,China is described.The larvae of this species feed on leaves of Liriodendron chinense and can cause serious damage to the plant.The new species is very similar to M.liriodendrovorax G.Xiao,1993 in general appearance,but can be distinguished from the latter by the cell 2Rs in fore wing with a distinct stigmata and the mesepisternum densely punctured and mixed with microsculptures.Although the morphological differences are less distinct,the mitochondrial genomes of the two species are significantly different.The P-distances of atp6,atp8,cob,cox1,cox2,cox3,nad1,nad2,nad3,nad4,nad4l,nad5,nad6 between M.fengyangshana and M.liriodendrovorax are 11.1%,13.6%,10.3%,7.6%,6.5%,7.0%,6.4%,11.6%,7.4%,7.5%,5.2%,6.4%and 7.2%,respectively.A key to the classification of world known species of Megabeleses Takeuchi is provided.This work has laid a foundation for the identification,monitoring and control of this pest.

关 键 词：叶蜂 巨基叶蜂亚科 巨基叶蜂族 线粒体基因组 木兰科 

分 类 号：S718.7[农业科学—林学]