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

Abstract

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

CLC Number:

S718.7

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.

Figures/Tables 6

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References 0

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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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A New Species of Tomostethus Konow (Hymenoptera: Tenthredinidae), a Defoliator of Fraxinus spp. in China

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