Research Article |
Corresponding author: Mao-Ling Sheng ( shengmaoling@163.com ) Academic editor: Jose Fernandez-Triana
© 2018 Ze-Jian Li, Tao Li, Jun Yan, Mao-Ling Sheng.
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 Z-J, Li T, Yan J, Sheng M-L (2018) The genus Rhynchobanchus Kriechbaumer in China, with descriptions of a new species and first record of the genus from Oriental region (Hymenoptera, Ichneumonidae, Banchinae). ZooKeys 752: 125-136. https://doi.org/10.3897/zookeys.752.23884
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Six species and two subspecies of the genus Rhynchobanchus Kriechbaumer, 1894 are reported from China, of which one, Rh. flavomaculatus Sheng, sp. n., is a new species and the first record of the genus from the Oriental Region. Rhynchobanchus flavopictus orientalis Kuslitzky, 2007 is a new Chinese record. A key to the species of Rhynchobanchus occurring in China is provided.
Banchini , China, key, new species, Oriental Region, Palaearctic Region, Rhynchobanchus
Rhynchobanchus Kriechbaumer, 1894, belonging to the tribe Banchini of the subfamily Banchinae (Hymenoptera: Ichneumonidae) and comprising seven species (
The aim of this study is to revise all available materials of Rhynchobanchus from China, describe one new species from the Oriental part of China, and provide an identification key to species occurring in China.
Type specimens were collected using entomological sweep nets in the forest of Tianmu Mt., Lin’an, Zhejiang Province and Shaoyang, Hunan Province (China). Other Chinese specimens from the collections in the Insect Museum, General Station of Forest Pest Management, State Forestry Administration, People’s Republic of China (GSFPM) were checked.
The holotype locality is a forest comprised of mixed deciduous angiosperms and evergreen conifers, mainly including Liquidambar formosana Hance, Aphananthe aspera (Thunb.), Acer spp., Quercus sp., Castanea spp., Elaeagnus pungens Thunb., Rosa multiflora Thunb., Euscaphis japonica (Thunb.) Dipppel, Lindera glauca (Sieb. et Zucc.) Bl., Pinus massoniana Lambert, Cryptomeria japonica (Linn.f.) D. Don, and Metasequoia glyptostroboides Hu et Cheng.
The photos of Rh. flavopictus orientalis Kuslitzky, 2007 (holotype), Rh. bicolor Kriechbaumer, 1894 identified by Townes, and Rh. flavopictus Heinrich, 1937 identified by Kuslitzky, deposited in the Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia (
Images were taken using a stereomicroscope Leica M205A with a LAS Montage MultiFocus. Morphological terminology is mostly based on
All examined material, including type specimens of the new species, is deposited in GSFPM.
Rhynchobanchus bicolor Kriechbaumer.
Rhynchobanchus can be distinguished from all other genera of Banchini by a combination of the following characters: Antennae long and slender; apical margin of clypeus with a median notch (Fig.
Unknown.
1 | Hindwing vein 1-cu almost disappeared (basal end of 2-Cu almost touching M+Cu). Areolet pentagonal (Fig. |
Rh. rufus Sheng & Sun |
– | Hindwing vein 1-cu distinct, approximately 0.2 as long as cu-a. Areolet quadrangular, if pentagonal, at least median tergites red. Others not entirely as above | 2 |
2 | Propodeum very rough. Ovipositor sheath evidently reaching past tip of metasoma. Antenna black, or slightly brown ventrally. Mesosoma black, or at most anterolateral portion of mesoscutum with small yellow spots. Tergites black, or at most posterolateral portion of tergites 1 to 4 with small yellow spots | Rh. niger Sheng |
– | Propodeum smooth or slightly rough, with distinct punctures or winkles. Ovipositor sheath at most reaching tip of metasoma. Antennae light in color, at least ventral profile red or reddish brown. Mesosoma with yellow spots. Scutellum yellow. Median portion of metasoma reddish brown, or at least apical lateral portion light in color | 3 |
3 | Longest spur of mid tibia approximately 0.8 times as long as first tarsomere. Body predominantly yellow with brown markings (Fig. |
Rh. flavomaculatus sp.n. |
– | Longest spur of mid tibia at most 0.7 times as long as first tarsomere. Body predominantly black with many yellow or brown spots | 4 |
4 | Flagellum reddish brown, its ventral profile slightly dark-reddish brown. Face reddish brown, or with small black spot. Basal portions of tergites 1 to 5 black, apical portions reddish brown; remainder of tergites almost entirely reddish brown. Hind tarsus dark reddish brown | Rh. flavopictus flavopictus Heinrich |
– | Flagellum black, or dorsal profile black, ventral red. Face black. Tergites black, or median tergites red | 5 |
5 | Tergite 2 as long as apical width. Propodeum and hind tarsus entirely black. Tergites black, at most lateral portions of median tergites with small yellow spots | Rh. flavopictus orientalis Kuslitzky |
– | Tergite 2 longer or shorter than apical width. Apical portion of propodeum yellowish brown. Hind tarsus brown or darkish brown. Tergites 2 to 4 reddish brown | 6 |
6 | Areolet pentagonal. Spiracle of first tergite strongly convex. First tergite 2.4 times as long as apical width, spiracle strongly convex (Fig. |
Rh. maculicornis Sheng, Liu & Wang |
– | Areolet quadrangular. First tergite 2.2 times as long as apical width, spiracle almost not convex (Fig. |
Rh. minomensis (Uchida) |
Holotype, Female, CHINA: Kaishanlaodian, 1106 m, 30°32'N, 119°43'E, West Tianmu Mt., Lin’an, Zhejiang Province, 28 April 2017, leg. Ze-Jian Li, Meng-Meng Liu & Kai-Wen Gao. Paratypes: 1 female, Yun Mt., 1380m, 26°38'N, 110°37'E, Wugang, Shaoyang, Hunan Province, 18 April 2011, leg. Ze-Jian Li. 1 female, same data as holotype, but 8 April 2013, leg. Li-Wei Qi & Biao Chu. 1 male, same data as holotype, but 14 April 2014, leg. Hai-Yan Nie & Ping Hu. 2 females, same data as holotype, but 23/24 April 2014, leg. Ting-Ting Ji.
Body yellowish brown with large irregular yellowish white spots (Fig.
Female (Fig.
Head. Face (Fig.
Mesosoma. Pronotum (Fig.
Wings (Fig.
Legs. Dorsal profile and apical portion of tibia with uneven thorns. Longer spur of mid tibia 0.8 times as long as first tarsomere. Ratio of length of hind first to fifth tarsomeres 5.8:2.5:2.0:1.0:1.5.
Metasoma. Tergite 1 about 2.3 times as long as apical width, distinctly convex basal of spiracle, with fine punctures and yellowish brown short setae, apical margin smooth; glymma deep, small; spiracle small, convex, almost circular, located at basal 0.3. Tergite 2 (Fig.
Colour pattern (Fig.
Body length approximately 13.1 mm. Forewing length approximately 10.0 mm. Antenna with 55 flagellomeres. Lateral longitudinal stripes of mesoscutum, transverse stripe beneath subalar ridge black brown to brown. Pterostigma yellowish brown. Otherwise similar to female.
CHINA: Hunan, Zhejiang.
This new species is similar to Rh. maculicornis Sheng et al., 1995, but can be distinguished from the latter by the following combination of characters: lower-posterior corner of mesopleuron with strong convexity; gena, vertex, mesopleuron and mesosternum yellow; and propodeum yellowish white. Rhynchobanchus maculicornis has lower-posterior corner of mesopleuron slightly convex; gena, vertex, mesopleuron and mesosternum black; basal portion of propodeum black, median reddish brown and apical yellow.
The name of the new species is derived from Latin words “flavi” (yellow) and “maculatus” (macula) after its body with large irregular yellowish spots.
1 female, CHINA: Xinbin, Liaoning Province, 28 May 1994, leg. Mao-Ling Sheng (GSFPM).
1 female, CHINA: Benxi, Liaoning Province, 6 June 2007, leg. Mao-Ling Sheng (GSFPM). New record for China.
1 male (holotype), CHINA: Benxi, Liaoning Province, 12 May 1985, leg. Shou-Lin Liu (GSFPM). 3 males (paratypes), same data as holotype (GSFPM). 1 male: Laotudingzi, Huanren, Liaoning Province, 25 May to 9 June 2011, IT (GSFPM). 1 male: Chagou, Haicheng, Liaoning Province, 15 May 2015, leg. Tao Li (GSFPM). 2 females, 2 males: Benxi, Liaoning Province, 30 May 2016, leg. Shu-Ping Sun (GSFPM). 5 males: Benxi, Liaoning Province, 16 May 2017, leg. Mao-Ling Sheng (GSFPM). 1 male: Kuandian, Liaoning Province, 18 May 2017, leg. Tao Li (GSFPM).
1 female, CHINA: Xinbin, Liaoning Province, 29 May 1994, leg. Mao-Ling Sheng (GSFPM). 2 females: Baishilazi, Kuandian, Liaoning Province, 26 May to 9 June 2011, IT (GSFPM).
1 female (holotype), CHINA: Xinbin, Liaoning Province, 28 May 1994, leg. Mao-Ling Sheng (GSFPM). 28 males (paratypes), id., but 28/ 29 May, 1994. 2 males (paratypes), CHINA, Shenyang, Liaoning Province, 8 May, 1994. 1 female: Kuandian, Liaoning Province, 4 June 2001, leg. Shu-Ping Sun (GSFPM). 1 female: Shenyang, Liaoning Province, 6 May 2002, leg. Mao-Ling Sheng (GSFPM). 1 female: Benxi, Liaoning Province, 27 May 2006, leg. Chun-Tian Zhang (GSFPM). 1 female: Kuandian, Liaoning Province, 7 June 2007, leg. Shu-Ping Sun (GSFPM). 1 female: Laotudingzi, Huanren, Liaoning Province, 25 May 2011, Mao-Ling Sheng (GSFPM).
1 female, CHINA: Shenyang, Liaoning Province, 3 May 2003, leg. Mao-Ling Sheng (GSFPM). 1 female (holotype): Kuandian, Liaoning Province, 6 June 2007, leg. Shu-Ping Sun (GSFPM). 1 female (paratype): Xinbin, Liaoning Province, 28 May, 1994, leg. Mao-Ling Sheng (GSFPM). 1 female (paratype): Huanren, Liaoning Province, June, 1996 (GSFPM). 3 females (paratypes): Kuandian, Liaoning Province, 6 to 8 June 2007, leg. Shu-Ping Sun & Mao-Ling Sheng (GSFPM). 1 female (paratype): Tieshashan, 900m, Benxi, Liaoning Province, 12 June 2011, leg. Ya-Nan Tang & Ying Zhang (GSFPM). 1 female (paratype), id., 19 June 2011, Tie-Fei Zhao & Ying Yang. 1 female (paratype): Benxi, Liaoning Province, 19 June 2013, IT (GSFPM). 1 female: Benxi, Liaoning Province, 12 June 2015, leg. Mao-Ling Sheng (GSFPM).
There are now eight known species of Rhynchobanchus Kriechbaumer in the world, of which one is only known from the Oriental Region, and seven species are known from the Palaearctic Region. Six species have been known from China. Hitherto, there are no host records.
The authors are deeply grateful to Dr Masahiro Ohara (Hokkaido University Museum, Hokkaido University, Japan) for his help while the corresponding author was working in the museum, and Dr Kyohei Watanabe (Kanagawa Prefectural Museum of Natural History, Odawara, Kanagawa, Japan) for providing the photos of Rh. flavopictus orientalis, Rh. bicolor, and Rh. flavopictus. The authors also wish to thank Dr Dicky S.K. Yu (Canadian National Collection, Ottawa, Canada) for presenting valuable materials for this work. This research was supported by the National Natural Science Foundation of China (NSFC, No.31070585, No. 31372246, No. 31501887) and Natural Science Foundation of Zhejiang Province (LY18C040001).