Research Article |
Corresponding author: Mao-Ling Sheng ( shengmaoling@163.com ) Academic editor: Gavin Broad
© 2015 Mao-Ling Sheng, Zhen-Qiang Cui, Matthias Riedel.
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:
Sheng M-L, Cui Z-Q, Riedel M (2015) The genus Gyrodonta Cameron, with description of a new species and a key to species (Hymenoptera, Ichneumonidae, Ichneumoninae). Journal of Hymenoptera Research 45: 87-95. https://doi.org/10.3897/JHR.45.5114
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A new species, Gyrodonta motuoica sp. n., collected from Motuo County, Xizang Autonomous Region, China is described. Gyrodonta concava (Uchida, 1937), previously known from Jiangxi, is reported from Hunan Province, China, and Nepal for the first time. Illustrations of both species are provided, as well as a key to species.
Ichneumoninae , Gyrodonta , new species, taxonomy, key
Gyrodonta Cameron, 1901, belonging to the tribe Ichneumonini of the subfamily Ichneumoninae (Hymenoptera: Ichneumonidae) and distributed in the Oriental Region, comprises two species (
Gyrodonta was originally placed in its own tribe because it is so unusual-looking, distinctive within Ichneumoninae (Cameron, 1901). But
In this article, one new Gyrodonta species, collected in Xizang Autonomous Region, China, and another species, collected in Hunan and in Nepal, previously known from Jiangxi, are described.
The holotype of Gyrodonta motuoica sp. n. was collected by Tao Li in Motuo County, Xizang Autonomous Region (China) on a blacklit sheet at night. The specimens of G. concava (Uchida, 1937) were collected by Ze-Jian Li (Lab of Insect Systematics and Evolutionary Biology, Central South University of Forestry and Technology, Changsha, China) using entomological nets in the forest of Mufushan, Hunan Province (CHINA) and by P. Cechovsky using a Malaise trap in Nepal.
Images were taken using a Leica M205A Stereomicroscope with LAS Montage MultiFocus.
All specimens, except one of G. concava from Nepal in the Biozentrum Linz, Austria, are deposited in the Insect Museum, General Station of Forest Pest Management (GSFPM), State Forestry Administration, People’s Republic of China.
Gyrodonta Cameron, 1901: 485. Type-species: Gyrodonta flavomaculata Cameron.
Head large, broad, greatly expanded behind the eyes. Inner margins of eyes parallel. Face wide, slightly concave, upper margin strongly elevated. Clypeal suture indistinct. Apical margin of clypeus slightly evenly convex forwards. Malar space wide. Gena broad. Mandible short, broad, apical portion bluntly rounded, without teeth; upper side with a strong tooth subbasally or near the middle; with basal transverse groove. Areolet pentagonal. Fore wing with vein 1cu-a opposite or distal of 1-M. Scutellum almost flat. Propodeum elongate, incompletely areolated; dorsal profile much longer than posterior oblique profile. Spiracle elongate, curved. Legs stout; lower profiles of tarsomeres 1 to 4 with long thick hairs. Claw simple. Metasoma semiamblypygous. Gastrocoelus indistinct. Ovipositor sheath reaching to apex of metasoma.
1 | Apical portion of flagellum cylindrical. Tooth of upper margin of mandible located subbasally. Subapical portion of clypeus with median tooth. Propodeum with costula and distinct median longitudinal carinae | 2 |
– | Apical portion of flagellum distinctly flattened below. Tooth of upper margin of mandible located almost at middle. Clypeus without distinct tooth. Propodeum without costula, median longitudinal carinae vestigial | G. motuoica sp.n. |
2 | Tergite 3 and subsequent tergites black, basal margins brown | G. flavomaculata Cameron |
– | Tergite 2 and subsequent tergites entirely reddish brown | G. concava (Uchida) |
The specific name is derived from the type locality
Holotype, female, collected on blacklit sheet in the night by Tao Li on 10 July 2013, China: Motuo County, 1976m, Xizang Autonomous Region.
Basal half of mandible longitudinally concave medially, with sparse, fine punctures; upper marginal tooth (Figure
Female. Body length approximately 15.0 mm. Forewing length approximately 11.5 mm.
Head. Face (Figure
Mesosoma. Pronotum (Figure
Metasoma. First tergite approximately 3 times as long as apical width, dorsal profile of petiole with sparse punctures, lateral with indistinct longitudinal wrinkles (Figure
Color (Figure
This new species is similar to G. concava (Uchida, 1937) but can easily be distinguished from the latter by the following combination of characters: apical portion of flagellum distinctly flattened below; upper marginal tooth of mandible located at middle; propodeum without costula, median longitudinal carinae vestigial; second tergite (Figure
Gyrodonta flavomaculata Cameron, 1901: 486.
Gyrodonta flavomaculata Cameron, 1901.
Gyrodonta flavomaculata Cameron, 1901.
Gyrodonta flavomaculata Cameron, 1901.
Gyrodonta flavomaculata Cameron, 1901.
India.
Pielia concava Uchida, 1937: 92.
Gyrodonta concava (Uchida, 1937). Townes, Townes and Gupta 1961: 375.
Gyrodonta concava (Uchida, 1937).
Face without oblique groove from outside of antennal socket to inner side of clypeal foveae. Subapical portion of clypeus with median tubercle. Upper marginal tooth of mandible located at subbase. Hind portion of scutellum distinctly slanted. Hind femur (Figure
1 female, China: Mufushan, 860m, Hunan province, 27 May 2007, leg. Ze-Jian Li. 1 female, Nepal: Kosi Zone, Dhankula District, Arun valley, Hille Skidna Bhedetar 2000–2700 m, 24–28 May 1996, leg. P. Cechovsky (Malaise Trap) (LINZ).
China, Nepal.
The authors are deeply grateful to Dr. Gavin Broad, Department of Life Sciences, the Natural History Museum, London, UK, and two anonymous reviewers for reviewing this manuscript. This research was supported by the National Natural Science Foundation of China (NSFC, No. 31372246, No. 31070585).