The subfamily Cremastinae Förster, 1869 currently includes 776 extant species in 36 genera. Among them, TemeluchaFörster, 1869 (235 species), CremastusGravenhorst, 1829 (129 species), TrathalaCameron, 1899 (101 species) and PristomerusCurtis, 1836 (100 species) have been recorded worldwide (Yu et al., 2012). Members of this subfamily are recorded in 82 species in the Eastern Palaearctic, 19 species in China, and 15 species in Japan (Yu et al., 2012). The Korean species of Cremastinae Förster 1869 belong to eight described species, Temelucha Förster (three species), Pristomerus Curtis (three species), and Trathala Cameron (two species), under three genera. Among these, one newly recorded species of Trathala was reported from South Korea and the Palaearctic region (Choi et al., 2014). Here, we report the genus Cremastus for the first time from South Korea. This genus consists of parasitoids of Lepidoptera and Coleoptera that emerge from larva or nymphs. The genus CremastusGravenhorst, 1829 is widely distributed in the Holarctic region and comprises 129 species worldwide (Yu et al., 2012). Kolarov et al. (2014) recently reported one new species, Cremastus kasparyani, from Turkey. To date, 130 species of Cremastus have been described worldwide. We redescribe two Korean species of Pristomerus for the first time.
In this study, we report the subfamily Cremastinae with three newly recorded species, Cremastus crassitibialisUchida, 1940, Pristomerus rufiabdominalisUchida, 1928 and P. scutellarisUchida, 1932, from South Korea. Diagnosis, figures of morphological features, and a key to the genera of Korean Cremastinae are provided.
Materials and Methods
The materials used in this study were collected by sweeping and Malaise traps, after which they were deposited in the animal systematic laboratory of Yeungnam University (YNU, Gyeongsan, Korea). Specimens were examined using an Axio- Cam MRc5 camera attached to a stereo microscope (Zeiss SteREO Discovery. V20; Carl Zeiss, Göttingen, Germany), processed using the AxioVision SE64 software (Carl Zeiss), and optimized with a Delta imaging system (i-solution, IMT i-Solution Inc. Vancouver, Canada). The morphological terminology is mostly that of Gupta and Maheshwary (1977). Distribution data and host records are taken from Yu et al. (2012). The following abbreviations are used: HU, Hokkaido University, Faculty of Agriculture, Entomological Institute (Sapporo, Japan); DEI, Deutsches Entomologisches Institut, Schicklerstrasse (Eberswalde, Germany); TD: Type depository; TS: Type species; CB, Chungcheongbuk-do; CN, Chungcheongnam- do; GB, Gyeongsangbuk-do; GG, Gyeonggi-do; GN, Gyeongsangnam-do; GW, Gangwon-do; JB, Jeollabuk-do; JN, Jeollanam-do; JJ, Jeju-do.
Results and Discussion
Systematic accounts
Family Ichneumonidae Latreille, 1802 맵시벌과
Subfamily Cremastinae Förster, 1869 배자루맵시벌아과
Key to genera of Korean Cremastinae (modified from Townes, 1971)
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Second tergite with thyridium; hind femur usually with a tooth beneath (like a projection) ·········· Genus Pristomerus - Second tergite without thyridium; hind femur without a tooth beneath ············································································· 2
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Ventral margins of first tergite bowed and touching or nearly touching, and thus partly or mostly enclosing the sternite. ···· ······························································ Genus Temelucha - Ventral margins of first tergite parallel and separate, the sternite visible for its entire length ··································· 3
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Clasper of male genitalia with a basal dorsal lobe or tooth on the dorsal side, the ventral part a large asymmetrical lobe; occipital carina incomplete above, its dorsal ends downcurved ······························································ Genus Cremastus - Clasper of male genitalia simple, without a basal dorsal lobe; occipital carina complete above, or narrowly incomplete in which case its dorsal ends are not curved or only weakly downcurved; apex of male clasper rounded ························· ··································································· Genus Trathala
Genus CremastusGravenhorst, 1829 검정꼬마자루맵시벌 속 (신칭)
CremastusGravenhorst, 1829: 730. TS: Cremastus spectatorGravenhorst, 1829.
NeoCremastusCushman, 1917: 503-551. TS: Porizon stigmaterus Cushman, 1917.
Zaleptopygus Viereck, 1911: 294. TS: Zeleptopygus obereaeViereck, 1911.
Cremastus crassitibialisUchida, 1940 검정꼬마자루맵시벌 (신칭) (Figs. 1-2)
Cremastus crassitibialisUchida, 1940: 21–30. Type: female; TD: HU
Redescription. Female.
Body length: 8.3–9.3 mm. Antenna with 39–42 flagellomeres. Fore wing length: 5.0–5.5 mm. Ovipositor length: 4.0–4.5 mm.
Color. Black, antennal scape and pedicel blackish yellow in ventral view. Margin of eyes, clypeus, mandible and temple yellow. Tegula pale yellow. Fore leg yellowish brown, mid leg brown except basal part of mid coxa black, hind femur to tarsus dark brown. Petiole dark reddish brown posteriorly, second tergite reddish brown apically in dorsal view. Ovipositor blackish brown.
Head. From above, face weakly largely punctate. Clypeus very small and separated from the face; apical margin of clypeus weakly round. Vertex with punctures smaller than face. Temple weakly convex, finely punctate. Occipital carina incomplete medially, occiput polished.
Mesosoma. Pronotum finely punctate, depressed medially, epomia distinct. Mesoscutum finely and densely punctate. Notauli indistinct. Scutellum strongly convex, lateral carina of scutellum absent. Mesopleurum largely and closely punctate, mesopleurum pit strong. Speculum convex, subpolished, smooth and hairless, area below speculum with numerous striate. Epicnemi al carina complete, sternaulus short. Propodeum rugose-punctate, with distinct carinae. Basal area of propodeum small, costula complete and distinct, areola and petiolar area separated, with numerous transverse striate. Spiracle of propodeum connected below costula. Hind tarsal claw simple. Trochanter length as long as trochantellus. Basal vein of fore wing distad to nervulus, areolet absent. Nervellus intercepted; discoidella vestigial.
Metasoma. Subpolished. Petiole elongate, with lateral groove; postpetiole with longitudinal striate. Second tergite with numerous longitudinal striate. Ovipositor slender and longer than hind tibia.
Male. Body length: 7.5–9.0 mm. Antenna with 38–41 flagellomeres. Fore wing length: 4.0–5.0 mm.
Materials examined. SOUTH KOREA: 5 males, Daegu, Dalseo-gu, Daegok-dong, Daegu Arboretum, 16–31.v.2012, S.G. Kang; 3 males, ditto, 30.v–7.vi.2012, S.G. Kang; 1 female, Daegu, Dalseo-gu, Hwawon-eup, 1.vi.2008, J.Y. Choo; 1 male, Daegu, Dalseong-gun, Dasa-eup, 24.v.1987, M.S. Yang; 4 females, Daegu, Nam-gu, Daemyeong-dong, Mt. Apsan, 10.v. 2009, H.O. Yoo; 1 female, GB, Cheongdo-gun, Unmun-myeon, Mt. Unmunsan, 17.v.1989, I.J. Ye; 1 female, 1 male, GB, Gyeongsan-si, Dae-dong, Yeungnam Univ., 10.v.1989, E.A. Hong; 1 male, ditto, 15.v.1990, H.O. Geum; 2 females, 4 males, ditto, 17.v.1989, I.J. Ye; 2 females, ditto, 18.v.1989, E.A. Hong; 1 female, 2 males, ditto, 20.v.1987, J.W. Lee; 1 male, ditto, 24– 13.v.1987, J.W. Lee; 1 female, ditto, 25.v.1987, J.W. Lee; 4 females, 4 males, ditto, 29.v.1988, H.G. Kim; 1 male, ditto, 3.v.1988, E.S. Kim; 1 female, ditto, 3.v.1988, H.G. Kim; 1 female, ditto, 30.v.1989; 1 male, ditto, 5–13.v.1987, J.W. Lee; 1 female, ditto, 7.v.1987, J.W. Lee; 2 females, ditto, 8–23.vi.2013, J.W. Lee; 1 female, GB, Mungyeong-si, Mungyeong-eup, Mt. Joryeongsan, 19.v.1997, S.M. Ryu; 1 female, GN, Uiryeong-gun, Daeui-myeon, Sinjeon-ri, 16.v.1987; 1 female, GW, Inje-gun, Gasan-ri, Mt. Bangtaesan, 26.vi.1996 S.M. Ryu; 1 female, JB, Gunsan-si, Gayado-ri, Sibidongpa-do, 26.vi.2007, S.H. Nam; 1 female, 1 male, JB, Muju-gun, Seolcheon-myeon, Jangdeok-ri, Gucheondong valley, 20.v.1983, J.W. Lee.
Host. Unknown.
Distribution. Korea (new record), China (Nei Menggu), Mongolia, Russia.
Genus PristomerusCurtis, 1836 가시자루맵시벌속 (신칭)
PristomerusCurtis, 1836: 588–624. TS: Ichneumon vulneratorCurtis, 1836
Pristomeridia Ashmead, 1900: 1–220. TS: Porizon agilisAshmead, 1900
Pristocelus Szépligeti, 1905: 1–68. TS: Pristocelus atricepsSzépligeti, 1905
NeoPristomerusViereck, 1912: 575–593. TS: Pristomerus appalachianusViereck, 1912
NesanomalonMorley, 1913: 1–140. TS: Nesanomalon dimidiatumMorley, 1913
Pristomerus rufiabdominalisUchida, 1928 붉은배가시자루 맵시벌 (신칭) (Fig. 3)
Pristomerus rufiabdominalisUchida, 1928: 177–297. Type: female; TD: HU.
Redescription. Female.
Body length: 7.5 mm. Antenna with 35 flagellomeres. Fore wing length: 4.6 mm. Ovipositor length: 5.8 mm.
Color. Yellowish brown. Area of ocelli and temple black. Vertex with reddish brown line at inner margin of eyes. First to third tergites with black marks. Ovipositor sheath dark brown.
Head. From above, central part of face convex, densely punctate. Clypeus very small and convex, separated from face, apical margin of clypeus round. Tentorial pits distinct. Vertex with granulate punctures. Distance between lateral ocellus and compound eye longer than between lateral ocelli. Temple weakly convex and granulated. Occipital carina complete; occiput polished.
Mesosoma. Pronotum rugosely punctate, epomia distinct. Mesoscutum coarsely and densely punctate. Notauli strong. Scutellum weakly convex, lateral carina of scutellum absent. Mesopleurum coarsely punctate, mesopleurum pit weak, speculum weakly convex and glabrous. Epicnemial carina complete. Sternaulus weak. Propodeum rugosely and coarsely punctate, with distinct carinae. Basal area small, costula complete and distinct. Areola and petiolar area not separated. Area posteromedia with numerous transversal striate. Spiracle of propodeum connected costula and pleural carina. Hind femur with projection at 2/3 apically. Hind tarsal claw comb. Basal vein of fore wing opposite nervulus, areolet absent. Nervellus weakly curved, discoidella absent.
Metasoma. Subpolished. Petiole elongate, with lateral groove, postpetiole with longitudinal striate. Second tergite with numerous longitudinal striate and thyridium. Ovipositor slender and longer than metasoma. Apex of ovipositor winding.
Male. Body length: 6.0 mm. Antenna with 35 flagellomeres. Fore wing length: 4.0–4.5 mm. Face black. Inner margin of eyes reddish brown. Clypeus yellow.
Materials examined. SOUTH KOREA: 1 male, CB, Danyanggun, Danyang-eup, Gasan-ri, Mt. Byeongpungsan, 13.viii.1997; 1 female, CB, Danyang-gun, Yeongchun-myeon, Uipung-ri, 13.vi.2009, S.H. Oh; 1 female, CN, Seosan-si, Haemi-myeon, Daegok-ri, Hanseo Univ., 1.viii–1.ix.2009, J.W. Lee; 1 female, ditto, 23–31.vii.2009, J.W. Lee; 1 male, GB, Bonghwa-gun, Myeongho-myeon, Bugok-ri, Mt. Cheongnyangsan, 30.vi.2007, J.W. Lee; GB, Mungyeong-si, Dongno-myeon, Jeokseong-ri, Mt. Woraksan, 20.ix.2006, J.C. Jeong; 1 female, 1 female, GB, Gyeongsan-si, Dae-dong, Yeungnam Univ., 24.viii–19.ix.2011, J.W. Lee; 1 female, GB, Yeongyang-gun, Irwol-myeon, Dogyeri, Mt. Heungnimsan, 20.vii.1997, S.M. Ryu; 1 female, GG, Dongducheon-si, Sangbongam-dong, Mt. Soyosan, 18.vi.1984, H.G. Lee; 1 female, GG, Osan-si, Sucheong-dong, 23.viii–5.ix. 2011; 1 female, GN, Hadong-gun, Hwagae-myeon, Mt. Jirisan Ssanggyesa, 20.vii.1989; 2 female, GN, Jinju-si, Gajwa-dong, 1–8.ix.1987; 1 female, ditto, 22–27.ix.1987; 1 female, ditto, 3– 9.vi.1989; 1 female, GN, Jinju-si, Ibanseong-myeon, Daecheon-ri, Gyeongsangnamdo Arb., 30.vi–15.vii.2011; 1 female, 1 male, GN, Sancheong-gun, Sicheon-myeon, Jungsan-ri, 7.ix.2002; 1 female, GW, Donghae-si, Samhwa-dong, Mureung valley, 28.viii–10.ix.
2006; 1 female, GW, Heungeop-myeon, Maeji-ri, Yeonsei Univ., 29.vi–15.vii.2011, J.W. Lee; 1 female, ditto, 6–28.vi.2011, J.W. Lee; 1 female, Gwangju, Nam-gu, Baegun-dong, 22.viii. 2000; 1 male, JB, Buan-gun, Byeonsan-myeon, Mt. Naebyeonsan, 26.vi.1991, J.I. Kim; 1 female, JB, Jangsu-gun, Gyenam-myeon, Mt. Jangansan, 16.ix.1997; 2 females, JB, Wanju-gun, Dongsangmyeon, Daea-ri Daea Arb., 13–24.vii.2011; 1 female, ditto, 19– 31.viii.2012, J.M. Park; 1 female, ditto, 24.v–17.vi.2011; 3 females, JN, Jangseong-gun, Jangseong-eup, 12.vii.2007, S.J.
Park; 1 female, JN, Jangseong-gun, Samgye-myeon, 12.vii.2007, S.J. Park; 1 male, Ulsan, Nam-gu, Ok-dong, Ulsan park, 6.vii– 4.viii.2011.
Host. Cydia funebrana (Lepidoptera: Tortricidae), Dichomeris derasella (Lepidoptera: Gelechiidae), Gypsonoma aceriana (Lepidoptera: Tortricidae), Paranthrene tabaniformis (Lepidoptera: Sesiidae), Phthorimaea operculella (Lepidoptera: Gelechiidae) (Yu et al., 2012).
Distribution. Korea (new record), Bulgaria, China (Henan), Hungary, Japan, Macedonia, Moldova, Poland, Romania, Russia
(Chita Oblast, Khabarovsk Kray, Krasnodar Kray, Primor'ye Kray), Ukraine, Yugoslavia.
Pristomerus scutellarisUchida, 1932 방패가시자루맵시벌 (신칭) (Fig. 4)
Pristomerus scutellarisUchida, 1932: 133–222. Type: female; TD: DEI.
Redescription. Female.
Body length: 9.5 mm. Antenna with 40 flagellomeres. Fore wing length: 6.5 mm. Ovipositor length: 5 mm.
Color. Black, antennal scape brown and flagellomeres dark blackish brown. Inner margin of eyes reddish brown. Clypeus, mandible, pronotum, tegula, fore leg and mid leg yellow. Hind leg brown with dark brown spot apically. Metasoma yellowish brown. Postpetiole and second tergite black in dorsal view. Half of third tergite black in dorsal view. Ovipositor yellowish brown and ovipositor sheath blackish brown.
Head. From above, face coarsely punctate; clypeus small, sparsely punctate and separated from face, apical margin of clypeus round. Distance between lateral ocellus and compound eye longer than between lateral ocelli. Vertex granulated. Temple weakly flat, granulate. Occipital carina complete, occiput polished.
Mesosoma. Pronotum coarsely punctate, epomia distinct. Mesoscutum densely punctate. Notauli distinct. Scutellum convex and smooth, lateral carina of scutellum absent. Mesopleurum coarsely and closely punctate. Speculum convex and glabrous. Epicnemial carina complete; sternaulus weak. Propodeum rugosely wrinkle punctate with distinct carinae. Basal area small and costula complete and distinct. Areola and petiolar area not separated. Spiracle of propodeum connected costula and pleural carina. Hind femur with sharp projection slightly behind the middle. Apical part of hind femur with teeth ventrally. Hind tibia with spines in dorsal view. Hind tarsal claw comb. Basal vein of fore wing opposite nervulus; areolet absent. Nervellus intercepted; discoidella absent.
Metasoma. Subpolished. Petiole elongate, with lateral groove. Postpetiole with longitudinal striate. Second and third tergites with numerous longitudinal striate. Ovipositor slender and as long as metasoma. Apex of ovipositor winding.
Male. Body length: 5.5 mm. Antenna with 29 flagellomeres. Fore wing length: 4.2 mm. Distance between lateral ocellus and compound eye shorter than between lateral ocelli. Lateral ocelli reach compound eye. Hind leg dark brown. Fourth to sixth tergites black.
Materials examined. SOUTH KOREA: 2 females, Daejeon-si, Dong-gu, Daejeon Univ., 15.viii–30.ix.2006, J.W. Lee; 8 females, GB, Gyeongju-si, Hyeongok-myeon, Namsa-ri, 28.vii –11.viii.2005, J.T. Mun; 1 female, ditto, 30.vi–14.vii.2005, J.T.
Mun; 2 females, GB, Ulju-gun, Samdong-myeon, Joil-ri, 4.viii. 2006, J.W. Lee; 1 male, GG, Gapyeong-gun, Buk-myeon, Mt. Myeongjisan, Nonnamgi, 29.vi.1999, J.C. Jeong; 1 female, GG, Gapyeong-gun, Cheongpyeong-myeon, Goseong-ri, Mt. Homyeongsan, 16–30.vii.2009, J.O. Lim; 1 female, GW, Wonju-si, Heungeop-myeon, Maeji-ri, Mesan Gwangwang Nongwon, 26.vii.2003; 2 females, JJ, Jeju-si, Donggye-myeon, near Jeolmul R.F., 11–18.viii.2005, C.H. Sin; 2 females, Seoul, Nowon-gu, Sanggye-dong, Mt. Suraksan, 18.vii–24.viii.2007; J.O. Lim.
Host. Diaphania pyloalis (Lepidoptera: Crambidae), Rhopobota naevana (Lepidoptera: Tortricidae) (Yu et al., 2012).
Distribution. Korea (new record), China (Guangxi, Hubei, Sichuan, Zhejiang), Japan Taiwan.