危害白蜡的敛片叶蜂属(膜翅目：叶蜂科)一新种

doi:10.11707/j.1001-7488.20220817

摘要/Abstract

摘要：

记述在华北和华东地区严重危害白蜡的一种膜翅目叶蜂科食叶新害虫：白蜡敛片叶蜂Tomostethus fraxini Niu & Wei, sp. nov.。其单眼后区强烈隆起，宽长比约等于2；触角第3节微长于第4、5节之和；体和足全部黑色，体毛银色；中胸前侧片下部具宽阔裸带；腹部背板具微细刻纹，锯鞘毛黑褐色，伸向后方等，与本属其他种类明显不同。敛片叶蜂属(Tomostethus Konow)在国内也是第一次确定性报道。比较山东种群与北京种群的线粒体基因组差异，确定两地种群属于同一种类。比较白蜡敛片叶蜂与已报道cox 1数据的2种敛片叶蜂之间的cox 1差异，白蜡敛片叶蜂与黑毛敛片叶蜂和黄肩敛片叶蜂的差异十分显著。为便于本属害虫鉴定，编制了敛片叶蜂属世界已知种类检索表。

关键词: 膜翅目, 叶蜂科, 蔺叶蜂亚科, 敛片叶蜂属, 中国, 梣属

Abstract:

In this paper, a new defoliator of Fraxinus spp., Tomostethus fraxini Niu & Wei, sp. nov., which seriously damages ash trees in North and East China, is described. T. fraxini differs from its congeners by the following characteristics: the postocellar area is strongly elevated with about 2 times the broad to long ratio; the third antennomere is slightly longer than the fourth and fifth antennomeres together; the body and legs are entirely black with silver body hairs; mesepisternum with a broad glabrous band in lower third; the abdominal tergites finely coriaceous; the setae on lateral of sheath black brown and extending backwards. Tomostethus Konow is also firstly reported formally in China. The differences in the mitochondrial genomes of the Shandong population and the Beijing population were compared, and the two populations were determined to be the same species. The genetic distances in cox 1 between the new species and the two previously reported Tomostethus spp. were compared. The result showed that the differences between them were very significant. In order to facilitate the identification of the pests of this genus, a key to the world known species of the genus was provided.

Key words: Hymenoptera, Tenthredinidae, Blennocampinae, Tomostethus Konow, China, Fraxinus

中图分类号:

S718.7

牛耕耘, 王青华, 闫家河, 付怀军, 刘瑞霞, 姜敏, 魏美才. 危害白蜡的敛片叶蜂属(膜翅目：叶蜂科)一新种[J]. 林业科学, 2022, 58(8): 165-172.

Gengyun Niu, Qinghua Wang, Jiahe Yan, Huaijun Fu, Ruixia Liu, Min Jiang, Meicai Wei. A New Species of Tomostethus Konow (Hymenoptera: Tenthredinidae), a Defoliator of Fraxinus spp. in China[J]. Scientia Silvae Sinicae, 2022, 58(8): 165-172.

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PCG	cox1	cox2	cox3	atp8	atp6	nad1	nad2
P-distance	0.005 2	0.004 4	0.002 5	0.000 0	0.005 9	0.007 4	0.008 6

PCG	nad3	nad4	nad4l	nad5	nad6	cytb	Average
P-distance	0.008 5	0.008 6	0.000 0	0.004 7	0.002 0	0.004 4	0.004 6

基因序列 Gene sequence	1	2	3	4	5	6	7	8
1 T. fraxini Beijing China mW588906		0.002 0	0.011 4	0.011 9	0.015 4	0.011 9	0.010 4	0.011 0
2 T. faxini Shandong_China	0.005 2		0.011 4	0.011 9	0.015 4	0.011 9	0.010 4	0.011 0
3 T. nigritus Russia KY260601	0.070 3	0.070 3		0.000 0	0.015 7	0.003 7	0.004 6	0.014 5
4 T. nigritus Russia KY260600	0.081 0	0.081 0	0.000 0		0.015 9	0.007 9	0.009 6	0.016 0
5 T. multicinctus Canada KT614673	0.131 0	0.131 0	0.118 1	0.127 6		0.015 9	0.019 7	0.016 1
6 T. nigritus Germany KC976394	0.092 3	0.092 3	0.008 4	0.032 0	0.135 3		0.002 2	0.014 3
7 T. nigritus Belgium KF528498	0.090 0	0.090 0	0.009 2	0.034 2	0.141 7	0.002 2		0.012 7
8 Eutomostethus vegetus China	0.166 6	0.164 2	0.119 9	0.138 0	0.155 7	0.123 8	0.144 2

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