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林业科学 ›› 2022, Vol. 58 ›› Issue (1): 62-69.doi: 10.11707/j.1001-7488.20220107

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危害乳源木莲叶片的枝膜叶蜂属(膜翅目: 叶蜂科)一新种

牛耕耘1,何学友2,曾丽琼2,魏美才1,*   

  1. 1. 江西师范大学生命科学学院 南昌 330022
    2. 福建省林业科学研究院 国家林业和草原局南方山地用材林培育重点实验室 福州 350012
  • 收稿日期:2020-05-14 出版日期:2022-01-25 发布日期:2022-03-08
  • 通讯作者: 魏美才
  • 基金资助:
    国家自然科学基金项目(31970447);国家自然科学基金项目(31672344)

A New Species of the Genus Cladiucha Konow (Hymenoptera: Tenthredinidae) Feeding the Leaves of Manglietia yuyuanensis (Magnoliaceae)

Gengyun Niu1,Xueyou He2,Liqiong Zeng2,Meicai Wei1,*   

  1. 1. College of Life Sciences, Jiangxi Normal University Nanchang 330022
    2. Key Laboratory of Southern Mountain Timber Forest Cultivation of Nationa Forestry and Grassland Administration Fujian Academy of Forestry Fuzhou 350012
  • Received:2020-05-14 Online:2022-01-25 Published:2022-03-08
  • Contact: Meicai Wei

摘要:

报道福建省危害乳源木莲叶片的一种专食性害虫——黄氏枝膜叶蜂Cladiucha huangbki Niu & Wei, sp. nov.。该种的潜在分布区包括广东北部、浙江、江西和湖南等乳源木莲分布区。黄氏枝膜叶蜂与大鞘枝膜叶蜂C. megatheca Wei最近似, 但本种体型较小; 雌虫触角22+3节, 明显长于头部宽的2倍; 颚眼距0.4倍于侧单眼直径; 中窝浅平, 上部无深坑; 单眼后区侧沟向后明显分歧; 锯腹片中部锯刃平直; 寄主为乳源木莲等, 与大鞘枝膜叶峰明显不同。枝膜叶蜂属已经测定3种线粒体基因组数据, 黄氏枝膜叶蜂与刻胸枝膜叶蜂C. punctata Wei形态差距较大, 但线粒体基因组十分近似, 其COⅠ等其他12个蛋白质编码基因差距很小, 但2种nad2基因的P距离为4.86, 差别十分明显, 这也是膜翅目广腰亚目内第一个被报道确认的近缘种间COⅠ差距微小但nad2差距很大的事例。为方便危害木兰科植物的枝膜叶蜂属种类鉴定, 本研究编制了世界枝膜叶蜂属分种检索表。

关键词: 膜翅目, 叶蜂科, 巨基叶蜂亚科, 枝膜叶蜂属, 中国, 木兰科

Abstract:

This paper reports a kind of obligate pest that damages the leaves of Manglietia yuyuanensis in Fujian province. The pest is a new species of Tenthredinidae, Cladiucha huangbki Niu & Wei sp. nov. Its potential distribution area includes northern Guangdong, Zhejiang, Jiangxi and Hunan. Cladiucha huangbki is the most similar to C. megatheca Wei, but differs from the latter with smaller body; the female antenna clearly longer than twice head breadth with 22 + 3 antennomeres; malar space 0.4 times as long as diameter of median ocellus; the middle fovea shallow and without a deep pit; the lateral furrows of postocellar area distinctly divergent; the middle serrulae of female lancet flat; and the host plant is M. yuyuanensis. The mitochondrial genomes of three Cladiucha species have been sequenced. C. huangbki and C. punctata Wei are divergent in morphology, but similar in the mitochondrial genome. The COⅠ and other 11 protein-coding genes have high similarity, but the P distance of the two nad2 genes is 4.86%. This is the first reported case within Symphyta of Hymenoptera that the difference between the COⅠ genes of the closely related species of a genus is very small but the difference between the nad2 genes of them is distinct. In order to facilitate the identification of the sawfly pests on Magnoliaceae, a key for world Cladiucha species is provided.

Key words: Hymenoptera, Tenthredinidae, Megabelesinae, Cladiucha, China, Magnoliaceae

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