Research Article |
Corresponding author: Jong-Wook Lee ( jwlee1@ynu.ac.kr ) Academic editor: Gavin Broad
© 2020 Jin-Kyung Choi, Jong-Wook Lee.
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:
Choi J-K, Lee J-W (2020) Four new species of the genus Rodrigama Gauld, 1991 (Hymenoptera, Ichneumonidae, Poemeniinae) from South Korea. Journal of Hymenoptera Research 75: 1-13. https://doi.org/10.3897/jhr.75.46867
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Four new species of the genus Rodrigama Gauld are described: R. sobaekensis sp. nov., R. koreana sp. nov., R. wooki sp. nov. and R. unmunensis sp. nov., all from South Korea. The 11 species of Rodrigama are distributed across Central America and Asia, comprising seven previously recorded species and the four new species presented here. An illustrated key to South Korean species of Rodrigama is provided.
Old World, R. koreana sp. nov., R. sobaekensis sp. nov., R. unmunensis sp. nov., R. wooki sp. nov., taxonomy
The genus Rodrigama is a unique ichneumonid with oblique grooves delimiting a central rhombic area on the second tergite (
Rodrigama is a small genus in the tribe Rodrigamini of the subfamily Poemeniinae, consisting of five species (
In this study, four new species, R. sobaekensis sp. nov., R. koreana sp. nov., R. wooki sp. nov. and R. unmunensis sp. nov., from South Korea are described. Photographs, comparative illustrations and an identification key to South Korean species are also provided.
Type specimens of the four new species are preserved in the Daegu National University of Education (DNUE, Daegu, Korea). Specimens used in this study were collected by sweeping, Malaise trapping and rearing. Paratypes of R. gauldi, R. takakuwai, and R. gamezi in the Natural History Museum, London (
Tribe Rodrigamini Wahl & Gauld, 1998
Rodrigama Gauld, 1991: 536. Type species: Rodrigama gamezi Gauld, by original designation.
Genus Rodrigama can be distinguished from all other poemeniines by the following characteristics: paired antero-lateral and postero-lateral oblique grooves delimiting a central rhombic area on the second tergite; fused tergite and sternite of the first tergite (
1 | Body largely reddish yellow to brown (Fig. |
R. sobaekensis Choi & Lee |
– | Body largely reddish brown to black (Figs |
2 |
2 | Length of second and third metasomal tergites equal to or shorter than width (Fig. |
R. unmunensis Choi & Lee |
– | Length of second and third metasomal tergites greater than width. First metasomal tergite more than 2.3 times as long as wide. First metasomal sternite extending behind spiracle. Epicnemial carina present ventrally | 3 |
3 | Second to fourth hind tarsomeres whitish. Body length 0.80–0.83 times as long as ovipositor length. First metasomal tergite more than 3.0 times as long as wide (Fig. |
R. wooki Choi |
– | Second to fourth hind tarsomeres yellow. Body length 0.63–0.77 times as long as ovipositor length. First metasomal tergite less than 2.5 times as long as wide (Fig. |
R. koreana Choi & Lee |
Holotype ♀, 19–30.iv.2007 (Malaise trap), Cheongdong valley (36°57'N, 128°26'E), Sobaeksan National Park, Cheondong-ri, Danyang-eup, Danyang-gun, CB, South Korea (J.W. Lee) [DNUE].
Paratypes. [South Korea] 1♀, 1–26.v.2009, Mt. Homyeongsan, Goseong-ri, Cheongpyeong-myeon, Gapyeong-gun, Alt. 220 m (37°43'16.3"N, 127°29'23.4"E), GG, (J.O. Lim); 1♀, 18–31.iv.2009, Mt. Homyeongsan, Goseong-ri, Cheongpyeong-myeon, Gapyeong-gun, Alt. 168 m (37°43'15.0"N, 127°29'18.9"E), GG, (J.O. Lim)
Female. Length of fore wing 18–19 mm; body 26–28 mm; ovipositor 35–36 mm. Malar space about 0.45 times as long as basal width of mandible. Inner orbits slightly converging ventrally (Fig.
R. sobaekensis sp. nov. (holotype). A habitus in lateral view B head in frontal view C Frons and mesoscutum in dorsal view D propodeum E first to third tergites in lateral view F second tergite in dorsal view G first to third tergites in dorsal view H posterior end of metasoma. Scale bars: 2 mm (A, E, G); 1 mm (B–D, F, H).
Coloration.
Body largely reddish yellow to brown. Face with narrow yellow stripe, extending along inner orbit to top of eye (Fig.
Male. Unknown.
South Korea.
Eastern Palaearctic.
The species is named after Mt. Sobaek National Park, where the holotype specimen was collected.
This new species is similar to R. maculata (
Holotype ♀, 18–31.iv.2009 (Malaise trap), Mt. Ungilsan Alt. 99 m (37°34'43.2"N, 127°18'40.1"E), Songchon-ri, Choan-myeon, Namyangju-si, GG, South Korea (J.O. Lim) [DNUE].
Paratypes. [South Korea] 1♀, 8.vi.1996, Hwaechon, Maeji-ri, Heungeup-myeon, Wonju-si, GW, (H.Y. Han & H.W. Byun); 1♀, 25.v.2000, Yonsei Univ, Campus, Maeji-ri, Wonju-si, GW, (B.S. Kang & S.H. Kong); 1♀, 19.iv–23.v.2005, Mt. Cheongmoksan, Mitan-myeon, Pyeongchang-gun, GW, (J.W. Lee); 1♀, 18–31.iv.2009, Mt. Homyeongsan, Goseong-ri, Cheongpyeong-myeon, Gapyeong-gun, Alt. 168 m (37°43'15.0"N, 127°29'18.9"E), GG, (J.O. Lim); 1♀, Mt. Yongmunsan, Yeonsu-ri, Yongmun-myeon, Yangpyeong-gun, Alt. 324 m (37°31'48.9"N, 127°34'23.8"E), GG, (J.O. Lim).
Female. Length of fore wing 13–14 mm; body 17–20 mm; ovipositor 22–24 mm. Head and mesosoma with long and dense setae. Malar space about 0.42 times as long as basal width of mandible. Inner orbits slightly converging ventrally (Fig.
R. koreana sp. nov. (holotype). A habitus in lateral view B head in frontal view C Frons and mesoscutum in dorsal view D propodeum E first to third tergites in lateral view F second tergite in dorsal view G first to third tergites in dorsal view H posterior end of metasoma. Scale bars: 1 mm (A–C, E, G–H); 0.5 mm (D, F).
Coloration.
Body largely reddish brown to black. Face with narrow yellow stripe, extending along inner orbit to top of eye (Fig.
Male. Unknown.
South Korea.
Eastern Palaearctic.
The species name is derived from South Korea, the country of the type specimens.
This new species is similar to R. wooki Choi sp. nov., but can be distinguished from by the second to fourth hind tarsomeres yellow (whitish in R. wooki); fore tibia with 14 stout spines on dorsal surface and three stout spines on distal end (fore tibia with four stout spines on dorsal surface and two stout spines on distal end in R. wooki); median lobe of mesoscutum reddish brown with longitudinal black spots, scutellum dark reddish brown to black, postscutellum yellow, with black spot in the middle (mesoscutum entirely black, scutellum and postscutellum black in R. wooki).
Holotype ♀, 12–26.iv.2008 (Malaise trap), Mt. Unmunsan site 1 (35°38'45"N, 128°57'33"E), Unmun-myeon, Cheongdo-gun, GB, South Korea (J.W. Lee) [DNUE].
Paratypes. [South Korea] 1♀, 17.v.1997, Mt. Dobongsan, Dobong-gu, Seoul, (H.Y. Lim); 1♀, 15.iv.1989, Mt. Suraksan, Nowon-gu, Seoul, (H.I. Jeong); 1♀, 8.v.2010, Mt. Oseosan; 1♀, 13.v.1994, Mt. Sobaeksan, Chungdong, (Y.S. Kim); 1♀, 26.v.1996, Haeyang-ri, Gyesan-gun, CB, (J.I. Kim); 1♀, 5.v.2001, from Eungoksa to 612.8 m peak, Mt. Taehwasan, Docheok-myeon, Gwangju-si, GG, (S.K. Kim & O.Y. Lim); 1♀, 7.vi.1995, Pyochungsa, Milyang-si, GN, (C.S. Park); 1♀, 7.vi.1986, Yonsei Univ. Maeji-ri, Wonju-si, GW, (T.J. Yoon); 1♀, 25.iv.2005, Yonsei Univ. Campus, Maeji-ri, Heungeup-myeon, Wonju-si, GW, (K.W. Oh, M.S. Kim & K.C. Shin); 1♀, 29.v.2004, Ugye-ri, Cheongha-myeon, Pohang-si, GB, (I.R. Shin).
Female. Length of fore wing 10.5–15 mm; body 15–20 mm; ovipositor 18–29 mm. Head and mesosoma with long and dense setae. Malar space about 0.24 times as long as basal width of mandible. Occipital carina interrupted medially. Apical flagellomeres tapered and distal end truncate narrowly. Antenna with 31–32 flagellomeres. Pronotum with strongly impressed and transversely striate groove weakly from epomia to ventroposterior corner; area dorsal to this groove rather strongly and densely punctate, slightly rugose (Fig.
R. wooki sp. nov. (holotype). A habitus in lateral view B head in frontal view C Frons and mesoscutum in dorsal view D propodeum E first to third tergites in lateral view F second tergite in dorsal view G first to third tergites in dorsal view H posterior end of metasoma. Scale bars: 1 mm (A, C, E, G–H); 0.5 mm (B, D, F).
Coloration.
Body largely reddish brown to black. Face with narrow yellow stripe, extending along inner orbit to top of eye (Fig.
Wings hyaline, slightly tinged with brown; pterostigma dark brown, with very weak faint brownish spots around junction of vein R and pterostigma.
Metasomal tergites black. Ovipositor dark brown, sheath black.
Male. Unknown.
South Korea.
Eastern Palaearctic.
The species is named after Prof. Jong-Wook Lee who collected the holotype specimen and whose collecting efforts have made a great contribution to research into Korean Ichneumonidae.
This new species is similar to R. longissima (
Holotype ♀, 30.v.2009, Mt. Unmunsan site 2 (35°38'50"N, 128°58'19"E), Unmun-myeon, Cheongdo-gun, GB, South Korea (G.I. Park) [DNUE].
Female. Length of fore wing 11.5 mm; body 15 mm; ovipositor 20 mm. Head and mesosoma with sparse setae. Malar space about 0.31 times as long as basal width of mandible. Occipital carina interrupted medially. Antennal flagellomeres missing. Pronotum with strongly impressed and transversely striate groove from epomia to ventroposterior corner; area dorsal to this groove rather strongly and densely punctate, slightly rugose; lower part of pronotum glabrous (Fig.
R. unmunensis sp. nov. (holotype). A habitus in lateral view B head in frontal view C Frons and mesoscutum in dorsal view D propodeum E first to third tergites in lateral view F second tergite in dorsal view G first to third tergites in dorsal view H posterior end of metasoma. Scale bars: 1 mm (A, C, E, G–H); 0.5 mm (B, D, F).
Coloration.
Body largely reddish brown to black. Face with narrow yellow stripe, extending along inner orbit to top of eye (Fig.
Male. Unknown.
South Korea.
Eastern Palaearctic.
The species is named after Mt. Unmun where the holotype specimen was collected.
This new species is similar to R. taishanense, but can be distinguished from by the ventral half of the hind coxa reddish brown and its dorsal half black (hind coxa black in R. taishanense); posterior parts of metasomal tergites with weak brown lines and metasomal tergites reddish brown to black in lateral view (metasomal tergites black in R. taishanense); epicnemial carina absent (R. taishanense has the ventral section of the epicnemial carina); the first metasomal tergite of R. taishanense is much longer than in the new species.
We are deeply grateful to the reviewers and the subject editor Gavin Broad for reviewing this manuscript and constructive criticism that improved this paper. This work was supported by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIBR201902205).