The genus NotopygusHolmgren, 1857 comprises 17 species worldwide, belonging to the subfamily Ctenopelmatinae (Hymenoptera: Ichneumonidae). Among them, nine species from the Western Palaearctic, seven from the Eastern palaearctic, four from the Nearctic, and one from the Oriental regions have been described. The subfamily Ctenopelmatinae Förster, 1869 comprises 107 genera with more than 1,510 species (Yu et al., 2016). Notopygus have the following characteristics: posterior margin of last metasomal tergite, which frequently project strongly upwards; hypopygium of female specimen strongly enlarged and convex at the posterior margin; ovipositor and ovipositor sheath upcurved. Kasparyan (2002) revised the Palaeartic species and Kasparyan and Khalaim (2007) provided the key to the Eastern Palaearctic Notopygus. In this study, we report genus and an unrecorded species of Notopygus for the first time from Korea. Description and photographs of Notopygus emarginatusHolmgren, 1857 are provided.

Materials and Method

The materials used in this study were collected by sweeping and deposited in the Insect Inquiry · Education Institute, Daegu National University of Education (DNUE-IIEI, Daegu, South Korea) and National Institute of Biological Resources (NIBR, Incheon, Korea). The morphological terminology follows Gauld (1991) and Broad et al. (2018), and the distributional data follows Yu et al. (2016). The specimen was examined using a Leica MC190 HD Camera attached to a Leica M125 Microscope (Leica Microsystems, Germany) with images processed using LEICA LAS X software (Leica). The abbreviations are follows: NM, Naturwissenschaftliche Sammlungen der Stadt Krefeld, Brempter Hof, Krefeld-Uerdingen, Germany; NR, Naturhistoriska Riksmuseet, Sektionen för Entomologi, Stockholm, Sweden.

Results

Family Ichneumonidae Latreille, 1802 맵시벌과

Subfamily Ctenopelmatinae Förster, 1869 짧은자루맵시벌아과

Genus NotopygusHolmgren, 1857 밑들이자루맵시벌속(신칭)

NotopygusHolmgren, 1857: 115. Type species: Notopygus emarginatus

AntipygusTschek, 1869: 437-448. Type species: Antipygus megerlei

Notopygus emarginatusHolmgren, 1857 (Figs 1 and 2) 밑들이짧은자루맵시벌(신칭)

Notopygus emarginatusHolmgren, 1857: 115. Lectotype: female; type locality: Sweden; type depository: NR.

Notopygus siniferUlbricht, 1922: 181-184. Type: female; type locality: Germany; type depository: NM.

Description. Female. Fore wing 9.0 mm, body 13.0 mm.

Color. Body generally black. Antenna black, 19-28 flagellomeres yellow to reddish brown. Median portion of mandible yellowish brown, basal black. Tegular reddish brown; all coxae black; legs brown to reddish brown, femora darker than other parts; hind femur almost black. Second to third metasomal tergites reddish brown.

Head: Face punctate with setae, weakly convex; lower face (length of between antennal socket and apical clypeal margin) 0.76 times as long as wide; median portion of face slightly convex, upper margin of the face with a small median tubercle. Occipital carina complete. Inner antennal sockets with longitudinal carina; between the antenna socket and eye with obvious longitudinal concavity. Mandible distinctly elongate and bidentate, the upper tooth slightly shorter than lower tooth; basal portion of mandible with dense longitudinal wrinkles on black spot. Malar space 0.3 times as long as basal width of mandible. Vertex indistinct punctures, postero-median portion distinctly concave. Irregular wrinkles between the ocellus and eye flat; lower half of frons irregular wrinkles. Antenna with 39 flagellomeres; ratios of lengths from first to fifth flagellomeres 16: 14: 11: 11: 10. Mesosoma: Epomia distinct. Mesoscutum shiny, with notauli. Scutellum and postscutellum with lateral carinae. The upper half of the mesopleuron flat and shiny inpunctate; lower half of mesopleuron with dense punctures. Juxtacoxal carina indistinct, submetapleural carina distinct. Propodeal spiracle round, not reaching pleural carina. Propodeum with distinct median longitudinal carinae, subparallel; area petiolaris shiny and inpunctate; costula absent. M&Rs (basal vein) distal to 1Cu-a (nervulus); 2m-cu (second recurrent vein) with two bullae; areolet with a stalk. Hind wing with nine distal hamuli; nervellus inclivous, intercepted at lower 0.5. Metasoma: First metasomal tergite approximately 2.0 times as long as apical width, median dorsal carinae reaching apical 0.2; interspace between median dorsal carinae slightly concave, smooth, and polished; latero-median carina of first metasomal tergite distinct. Basal 0.4 with a pair of median longitudinal carinae on second metasomal tergite, from the spiracle to base with a strong carina. Posterior margin of metasomal tergite eight deeply emarginate, sharply upcurved and projecting upwards. Ovipositor short and strongly upcurved.

Material examined. [South Korea] 1♀, Gwangwon-do, Hoengseong-gun, Mt. Maehwasan, N37˚23′37″ E128˚05′30″, Alt. 610 m, 27.vi-1.viii.2015, D.S. Choi (DNUE_IIEI); 1♀, Sobaeksan National Park, 5.vii.2010 (NIBR_ULFUIN0000010942); 1♀, Sobaeksan National Park, Birosa. 26.v-23.vi.2016, J.W. Lee (DNUE_IIEI); 1♀, Chungcheongbuk-do, Danyang-gun, Yongchun-myeon, Namcheon-ri, San 60-10, 4-25.v.2016, S.W. Suck (DNUE_IIEI).

Distribution. South Korea (new record), Austria, Belgium, China, Czech republic, Slovakia, Finland, France, Germany, Poland, Russia, Sweden, Switzerland, Ukraine, United Kingdom.

Region. Eastern Palaearctic and Western Palaearctic.

Remarks.Sun and Sheng (2014) examined specimens deposited in the NHM (the Natural History Museum, London) and ZSM (the Zoologische Staatssammlung München), they reported that female specimens have a slight variation in the color of the antennal basal portion and hind femur.