Genus AnteonJurine, 1807 is one of the largest genera of the family Dryinidae, including 423 valid species in all world and 48 species in the Eastern Palaearctic region (Xu et al., 2013; Olmi & Xu, 2015). In East Asia, 107 species are recorded in China, 18 species in Japan and 10 species in the Russian Far East (Xu et al., 2013; Olmi & Xu, 2015). The South Korean species of Anteon were studied in recent years mainly by Kim et al. (2012) and Kim and Lee (2013, 2014), resulting in 31 recorded species.
During our recent studies on Dryinidae, more than 500 Anteon specimens were examined. They were collected in various countries of the Eastern Palaearctic region (South Korea, China, Japan, Russian Far East). As result of this, three newly recorded species of Anteon were identified in South Korea. They are described and illustrated herein. In addition, an updated identification key to Anteon species from South Korea is presented.
Materials and Methods
All specimens are deposited in the Yeungnam University (YNU), Gyeongsan, South Korea. The terminology used in the present study follows that of Olmi (1984, 1994, 1999). The following abbreviations are used: OL, distance between the inner edges of a lateral ocellus and the median ocellus; OOL, distance from the outer edge of a lateral ocellus to the compound eye; OPL, distance from the posterior edge of a lateral ocellus to the occipital carina; POL, distance between the inner edges of two lateral ocelli; TL, distance from the posterior edge of an eye to the occipital carina; MT, Malaise trap.
Systematic accounts
Genus AnteonJurine, 1807
AnteonJurine 1807: 302. Type species: Anteon jurineanum Latreille, 1809, by monotypy.
Anteon brachycerum (Dalman, 1823) 짧은원집게벌 (신칭) (Figs 1, 4, 7)
Dryinus brachycerus Dalman, 1823: 12.
Anteon brachycerum (Dalman): Richards, 1939: 250.
Diagnosis of female. Body length 2.35 mm. Head, antenna, mesosoma, legs and metasoma black except mandible, tibiae and tarsus brown. Antennal segments in following proportions: 24: 11: 11: 10: 9: 10: 10: 10: 9: 15. Head dull and granulate, frontal line complete and indistinct; POL: 13; OL: 6; OOL: 14; OPL: 5; TL: 8; occipital carina complete. Pronotum, scutum and scutellum shiny and punctate. Notauli incomplete, reaching approximately 0.3× length of scutum. Propodeum reticulate rugose, with strong transverse keel between dorsal and posterior surface; posterior surface with two longitudinal keels and median area shiny and smooth, rugose near margins. Forewing hyaline, without dark transverse bands; stigmal vein curved, distal part of stigmal vein much shorter than proximal part (11: 20). Segment I of protarsus 3.0× length of segment IV. Enlarged claw with proximal prominence bearing one long bristle. Segment V of protarsus with 10 bristles; distal apex with about 5 lamellae.
Male. Unknown in South Korea (see description in Olmi & Xu., 2015).
Material examined. South Korea: 1♀, Gyeongsangbuk-do, Cheongdo-gun, Unmun-myeon, Mt. Unmunsan, Ssalbawi (U7), 35°38'08"N, 129°01'27"E, 20.IV-6.VI.2013 (MT), J.W. Lee (YNU).
Hosts. Cicadellidae Macropsinae: Oncopsis flavicollis (Linnaeus) (Russia), Oncopsis sp. (United Kingdom).
Distribution. South Korea (new record), Austria, Belgium, Czech Republic, Denmark, Esthonia, Finland, France, Germany, Hungary, Ireland, Japan, Nepal, Netherlands, Norway, Romania, Russia (European), Sweden, United Kingdom.
Remarks. The unique female specimen from South Korean has notauli shorter than in females from other countries (South Korean specimens=3:10; other country specimens=4-5:10).
Anteon confusumOlmi, 1991 한줄원집게벌 (신칭) (Figs. 2, 5, 8)
Anteon confusumOlmi, 1991: 171.
Diagnosis of female. Body length 3.78 mm. Head black, except clypeus, mandible, face between the antennal toruli yellowish brown; antenna yellowish brown except segments I-II yellow, dorsal part of VIII-X darker; mesosoma and metasoma black, except posterior margin of pronotum and lower part of lateral region of pronotum brown; legs yellow. Antennal segments in following proportions: 24: 12: 24: 20: 18: 17: 18: 16: 16: 23. Head shiny and punctate, except ocellar region unsculptured; anterior half of face and vertex behind the ocelli rugose to reticulate, frontal line complete; POL: 10; OL: 8; OOL: 12; OPL: 10; TL: 10; occipital carina complete. Pronotum, scutum and scutellum shiny and sparsely punctate except anterior part of pronotum rugose. Notauli incomplete, reaching approximately 0.9× length of scutum. Propodeum reticulate rugose, with strong transverse keel between dorsal and posterior surface; posterior surface with two longitudinal keels and median area as rugose as lateral areas. Forewing hyaline, without dark transverse bands; stigmal vein curved, distal part of stigmal vein much shorter than proximal part (1: 2). Segment I of protarsus 2.0× length of segment IV. Enlarged claw with proximal prominence bearing one long bristle. Segment V of protarsus with one row of 23 lamellae; distal apex with about 8 lamellae.
Male. Unknown.
Material examined. South Korea: 1♀, Gyeonggi-do, Anyangsi, Manan-gu, Gwanak Arb., Alt. 140 m, 37°25'06"N, 126°56'50"E, 26.VI-4.VII.2007 (MT), J.O. Lim (YNU).
Hosts. Unknown.
Distribution. South Korea (new record), China (Shanxi, Taiwan).
Remarks.Anteon confusum is a very rare species, and formerly only three female specimens were collected: 2♀♀ from Taiwan (Oriental China) and 1♀ from Shanxi (Eastern Palaearctic China).
Anteon infectum (Haliday, 1837) 광교원집게벌 (신칭) (Figs. 3, 6, 9)
Dryinus infectus Haliday in Walker, 1837: 419.
Anteon infectum (Haliday): Richards, 1939: 258.
Diagnosis of male. Body length 4.28 mm. Head black, except mandible yellowish brown; antenna brown with dorsal part of segments II-VIII dark banded; mesosoma and metasoma black; legs yellowish brown, except basal half of metacoxa black, apical half of metafemur dark brown. Antenna filiform; antennal segments in following proportions: 16: 8: 10: 9: 9: 9: 9: 9: 9: 14. Head shiny and reticulate rugose, frontal line complete; POL: 16; OL: 8; OOL: 12; OPL: 10; TL: 10; occipital carina complete. Pronotum, scutum and scutellum shiny and punctate. Notauli incomplete, reaching approximately 0.5× length of scutum. Propodeum reticulate rugose, with strong transverse keel between dorsal and posterior surface; posterior surface with two longitudinal keels and median area shiny and smooth, rugose near margins. Forewing hyaline, without dark transverse bands; stigmal vein curved, distal part of stigmal vein much shorter than proximal part (2: 7). Male genitalia without distal inner process, with dorsal membranous process.
Female. Unknown in South Korea (see description in Olmi & Xu., 2015).
Material examined. South Korea: 1♀, Gyeonggi-do, Suwon-si, Jangan-gu, Sangwanggyo-dong, Mt. Gwanggyosan, 20.IV- 5.VIII.2011 (MT), J.W. Lee (YNU).
Hosts. Cicadellidae Iassinae: Iassus scutellaris (Fieber) (Italy), Iassus lanio (Linnaeus) (Italy, United Kingdom).
Hyperparasitoids. Ismaridae: Ismarus halidayi Förster (United Kingdom).
Distribution. South Korea (new record), Transpalaearctic from Europe to Russian Far East, Japan.
Key to the South Korean species of Anteon
Females (unknown in A. albonigrum Olmi, A. autumnale Olmi, A. devriesi Olmi, A. ingenuum Olmi, A. peterseni Olmi, A. pilosum Xu, Olmi & He, A. songyangense Xu, He & Olmi, A. sulawesianum Olmi, A. yuani Xu, He & Olmi, A. worakense Kim & Lee)
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1. Segment IV of protarsus at most 0.50x as long as or much shorter than segment I; protarsal segment III or IV produced into hook ········································································· 2
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2. Posterior surface of propodeum without longitudinal keels ······················································································· 3
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3. Notauli absent or hardly shortly visible near anterior margin of scutum ··········································· A. metuendum Olmi
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4. Segment V of protarsus laterally expanded and forming wide lamina ···································································· 5
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5. Notauli reaching approximately 0.50x length of scutum; head with POL about as long as OOL ······························· ·················································· A. magnatum Kim & Lee
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6. Head completely and strongly reticulate rugose; segment IV and occasionally also segment III of protarsus produced into hook ········································································· 7
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7. Notauli reaching about 0.30x length of scutum; head with OOL about as long as OL ··············· A. reticulatum Kieffer
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8. Notauli reaching approximately 0.65-0.90x length of scutum ······················································································· 9
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9. Head black, except mandible testaceous ··· A. medium Olmi
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10. Distal part of segment V of protarsus approximately as long as proximal part ··· A. septentrionale Xu, He & Olmi
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11. Antenna black; OOL much longer than OL; notauli reaching 0.40-0.50x length of scutum ····························· ··············································· A. brachycerum (Dalman)
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12. Posterior surface of propodeum without longitudinal keels ························································ A. achterbergi Olmi
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13. Posterior surface of propodeum with median area shining, mostly smooth and unsculptured or partly rugose ······· 14
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14. Posterior surface of pronotum as long as, or longer than scutum ················································· A. munitum Olmi
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15. Segment V of protarsus with lamellae not extending continuously to distal apex ······· A. koreanum Kim & Lee
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16. Basal part of segment V of protarsus longer than distal part ·························································· A. confusum Olmi
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17. Basal part of segment V of protarsus slightly shorter than distal part ············································· A. insertum Olmi
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18. Segment IV of protarsus about twice as long as segment 1 ································································· A. hilare Olmi
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19. Pronotum with posterior surface transverse, more than twice as broad as long ················································· 20
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20. Prothorax reddish-brown; posterior surface of pronotum less than three times as broad as long ····· A. hikense Olmi
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21. Head black; scutum completely or mainly black; pronotum reddish, or yellow, or testaceous; segment V of protarsus with two rows of lamellae ···················· A. gaullei Kieffer
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22. Head and mesosoma usually partly or totally testaceous, or yellow, or reddish, never totally black with frons partly testaceous ·································· A. ephippiger (Dalman)
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23. Notauli reaching approximately 0.40x length of scutum · ······························································· A. takenoi Olmi
Males (unknown in Anteon confusum Olmi, A. hikense Olmi, A. koreanum Kim & Lee, A. magnatum Kim & Lee, A. medium Olmi, A. metuendum Olmi, A. nanlingense Xu, Olmi & He, A. wushense Olmi)
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1. Posterior surface of propodeum without longitudinal keels ························································································ 2
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2. Paramere without distal inner process ······························· ····················································· A. jurineanum Latreille
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3. Distal inner process of paramere very large and extended along entire paramere ······························ A. devriesi Olmi
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4. Head black, with anterior half of face testaceous ··············· ··························································· A. albonigrum Olmi
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5. Paramere without distal inner more or less pointed process ························································································ 6
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6. Posterior surface of propodeum with median area smooth, almost completely not rugose ·········································· 7
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7. Head more or less finely punctate and unsculptured among the punctures or granulate, not rugose; face without areolae or strong punctures resembling areolae ··························· 8
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8. Head granulate ························· A. brachycerum (Dalman)
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9. Proximal membranous process of parameres with inner margin provided of numerous bristles ······························· ················································ A. pilosum Xu, Olmi & He
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10. Notauli reaching approximately 0.3-0.55x length of scutum ··················································································· 11
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11. Notauli reaching approximately 0.3-0.55x length of scutum; paramere much shorter than penis ······· A. peterseni Olmi
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12. Notauli reaching approximately 0.7-0.8x length of scutum ······································· A. songyangense Xu, He & Olmi
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13. Paramere approximately as long as penis ························ ···························································· A. munitum Olmi
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14. Metafemur completely or partly black or brown ········· 15
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15. Vertex behind the ocellar triangle with two oblique keels connecting posterior ocelli to occipital carina ················· ························································ A. esakii Yasumatsu
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16. Paramere with inner fold provided of mosaic drawing ···· ················································ A. worakense Kim & Lee
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17. Scutum punctate, unsculptured among punctures, not granulated ··································································· 18
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18. Head shiny, punctate, unsculptured among punctures, at most very slightly rugose on temple and behind ocellar triangle ········································································ 19
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19. Paramere with inner fold provided of mosaic drawing ···· ················································ A. worakense Kim & Lee
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20. Notauli reaching about 0.25-0.35x length of scutum ······· ······························································· A. takenoi Olmi
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21. Notauli reaching about 0.6-0.8x length of scutum; POL less than twice as long as OL ···················· A. hilare Olmi
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22. Vertex of head behind ocellar triangle not rugose ··········· ···································· A. septentrionale Xu, He & Olmi
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23. Notauli reaching about 0.5-0.6x length of scutum ··········· ························································ A. esakii Yasumatsu
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24. Frontal line complete ···················· A. reticulatum Kieffer
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25. Scutum granulated ······················ A. jurineanum Latreille
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26. Scutum with anterior half rugose; remaining area punctate and unsculptured among the punctures ······· A. japonicum
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27. Distal inner process of paramere extended medially and with inner margin excavated ······· A. flavicorne (Dalman)
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28. Genitalia with dorsal membranous process short, reaching about 0.5x length of parameres ········· A. exiguum (Haupt)
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29. Head more strongly punctate, unsculptured among punctures, with a short or long frontal line ······································· ···························································· A. gaullei Kieffer
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30. Head with POL as long as OOL; notauli reaching 0.5x length of scutum ························ A. ephippiger (Dalman)