Research Article |
Corresponding author: Cheng-De Li ( lichengde0608@sina.com ) Academic editor: Norman Johnson
© 2021 Ming-Rui Li, Cheng-De Li.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Li M-R, Li C-D (2021) A new species of Asecodes Förster (Hymenoptera, Eulophidae) and first record of A. reticulatum (Kamijo) from China, with a key to Chinese species. ZooKeys 1049: 1-14. https://doi.org/10.3897/zookeys.1049.65964
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A new species of Asecodes Förster, A. medogense sp. nov. is described from Tibet, China and A. reticulatum (Kamijo) is reported from China for the first time. A key to all known species of genus Asecodes in China is provided.
Chalcidoidea, Entedoninae, natural enemy, parasitoid wasp, taxonomy
The genus Asecodes (Hymenoptera, Eulophidae, Entedoninae) was established by
The genus Asecodes can be easily separated from other genera in Entedoninae by: subtorular grooves present (Figs
Before this study, there are only three species of Asecodes known from China, Asecodes sinense (Ling) was first described from China by
Specimens were collected by Malaise traps and sweeping nets and were mounted on a card, or dissected and mounted in Canada Balsam on slides following methods described by
Terminology follows the
Type material is deposited in the insect collections at Northeast Forestry University (NEFU), Harbin, China.
1 | Fore wing hyaline, without infuscate transverse band, and with three stigmal hairlines (Fig. |
A. delucchii (Bouček, 1971) |
– | Fore wing with an infuscate transverse band below MV, and with two stigmal hairlines (e.g., Figs |
2 |
2 | Pedicel much shorter than F1; anterior 2/3 of mesoscutellum reticulate and posterior 1/3 smooth | 3 |
– | Pedicel as long as F1 (Figs |
4 |
3 | Gaster ovate; metasoma subequal to mesosoma, shorter than head plus mesosoma (ratio length of: metasoma : head : mesosoma about 3.2:1:3) | A. turcicum (Nees, 1834) |
– | Gaster oblong ovate; metasoma distinctly longer than mesosoma, also slightly longer than head plus mesosoma (ratio length of: metasoma : head : mesosoma about 5.2:1:3.5) | A. sinense (Ling, 2000) |
4 | Scape with apex of ventral margin curved smoothly in a wide arc (Fig. |
A. reticulatum (Kamijo, 1986) |
– | Scape with apex of ventral margin curved nearly in a right-angle (Fig. |
A. medogense sp. nov. |
Holotype : ♀ [NEFU; on card], CHINA, Tibet, Medog County (altitude: 1400 m), 11–18.V.2017, Zhaxi, by Malaise trap. Paratypes: 1♀ [NEFU; on slide], CHINA, Tibet, Medog County (altitude: 1400 m), 15–22.VI.2017, Zhaxi, by Malaise trap; 3♀ [NEFU; 2 on cards, 1 on slide], CHINA, Tibet, Medog County (altitude: 1400 m), 6–13.VII.2017, Zhaxi, by Malaise trap.
Female. Scape strongly compressed from side to side and expanded from base to apex, with apex of ventral margin curved nearly in right-angle; pedicel as long as F1; F3 distinctly paler than other segments (Fig.
Female. Body length 0.8–0.9 mm. Antenna mainly dark brown, except F3 distinctly paler than other segments (Fig.
Head
(Fig.
Mesosoma
(Fig.
Metasoma
(Fig.
Male. Unknown.
Unknown.
The specific name is derived from the name of the collection locality of the type specimens.
China (Tibet).
Asecodes medogense is similar to A. reticulatum in having the mesoscutellum entirely reticulate; pedicel nearly as long as F1; fore wing with an infuscate transverse band below MV. The new species differs from A. reticulatum in having scape with apex of ventral margin curved nearly in a right-angle (curved smoothly in a wide arc in A. reticulatum); meshes of reticulation on mesoscutum and mesoscutellum relatively denser and smaller (relatively coarser and larger in A. reticulatum); disc of fore wing with more dense setation than A. reticulatum.
Closterocerus reticulatus
(Kamijo):
Desmatocharis reticulata Kamijo, 1986: 243.
Teleopterus reticulatum
(Kamijo):
Teleopterus reticulatus
(Kamijo):
1♀ [NEFU; on slide], China, Heilongjiang Province, Yichun City, Dailing District, Liangshui Forestry Station, 28.VII.2015, Si-Zhu Liu, Xin-Yu Zhang and Xing-Yue Jin, sweeping; 2♀ [NEFU; 1 on card, 1 on slide], CHINA, Heilongjiang Province, Yichun City, Dailing District, Liangshui Forestry Station, 9.VII.2013, Guo-Hao Zu, Si-Zhu Liu and Hui Geng, sweeping.
Female. Scape compressed, with apex of ventral margin curved smoothly in a wide arc, pedicel as long as F1 (Fig.
Primary parasitoid of Rhamphus oxyacanthae (Marsham) (Coleoptera, Curculionidae) (
China (Heilongjiang Province) (new record), Japan (
See
Desmatocharis sinensis Ling, 2000: 260.
2♀ [NEFU; 1 on card, 1 on slide], China, Sichuan Province, Guangyuan City, Qingchuan County, 22.VIII.2015, Ye Chen and Chao Zhang, sweeping; 2♀ [NEFU; 1 on card, 1 on slide], CHINA, Yunnan Province, Lvchun County, Huanglianshan Natural Reserve, 18.I.2019, Jun-Jie Fan, Jun Wu and Ting-Ting Zhao, sweeping.
Female. Scape compressed, pedicel slightly shorter than half the length of F1; mesoscutellum with anterior 2/3 reticulated, posterior 1/3 smooth and shiny; fore wing with an infuscate transverse band below MV; metasoma longer than head plus mesosoma (ratio length of: metasoma : head : mesosoma about 5.2:1:3.5); gaster oblong ovate, about 2.2 times as long as its maximum width.
Unknown.
China (Yunnan (new record) and Sichuan (
The original description of Asecodes sinense was given by
Asecodes turcicus
(Nees):
Closterocerus turcicus
(Nees):
Desmatocharis turcica
(Nees):
Desmatocharis turcicus
(Nees):
Entedon turcicus
(Nees):
Eulophus turcicus Nees, 1834: 155.
Teleopterus turcicus
(Nees):
2♀ [NEFU; 1 on card, 1 on slide], China, Tibet, Medog County (altitude: 1400 m), 22–29.VI. 017, Zhaxi, by Malaise trap; 3♀ [NEFU; 2 on cards, 1 on slide], CHINA, Tibet, Medog County (altitude: 1400 m), 6–13.VII.2017, Zhaxi, by Malaise trap.
Female. Scape compressed; mesoscutellum with anterior 2/3 reticulated, posterior 1/3 smooth and shiny; fore wing hyaline with an infuscate transverse band below MV; metasoma subequal to mesosoma, shorter than head plus mesosoma (ratio length of: metasoma : head : mesosoma about 3.2 : 1 : 3); gaster ovate.
Unkonwn.
China (Tibet (new record), Gansu (
Asecodes delucchii
(Bouček):
Asecodes deluchii
(Bouček):
Chrysocharoidea
sp.:
Omphale
sp.:
Teleopterus delucchii Bouček, 1971: 537.
4♀ [NEFU; 2 on cards, 2 on slides], China, Guizhou Province, Zunyi City, Suiyang County, 6.VIII.2020, Jun Wu, sweeping.
Female. Scape normal, not compressed; fore wing hyaline, without infuscate transverse band, and with three stigmal hairlines: two stigmal hairlines toward the apex of wing and one towards parastigma (Fig.
Primary parasitoid of the peach leafminer, Lyonetia clerckella (Linnaeus) (Lepidoptera, Lyonetiidae) (
China (Guizhou (new record) and Gansu (
Asecodes delucchii can be easily separated from other species distributed in China by its characteristic fore wing. An Indian species, A. zhui Jamali having a similar fore wing was described by
We are grateful to Mr Zhaxi, Chao Zhang, Jun Wu, Jun-Jie Fan, Dr Guo-Hao Zu, Ye Chen, Si-Zhu Liu, Hui Geng, Miss Xin-Yu Zhang, Ting-Ting Zhao and Xing-Yue Jin for specimen collection. We are also grateful to Prof. Christer Hansson, Prof. Norman Johnson and an anonymous reviewer for providing valuable comments and suggestions to improve the manuscript.