Journal Search Engine
Search Advanced Search Adode Reader(link)
Download PDF Export Citaion korean bibliography PMC previewer
ISSN : 1225-0171(Print)
ISSN : 2287-545X(Online)
Korean Journal of Applied Entomology Vol.59 No.2 pp.109-112

A New Record of the Genus Stenomacrus (Hymenoptera: Ichneumonidae: Orthocentrinae) from South Korea

Jin-Kyung Choi*
Department of Science Education, Daegu National University of Education, Daegu 42411, Korea
March 9, 2020 March 24, 2020 March 30, 2020


Stenomacrus deletus (Thomson, 1897), belonging to Orthocentrinae of Ichneumonidae, is newly recognized in South Korea. Most Stenomacrus species are known as koinobiont endoparasitoids of dipteran, lepidopteran, and coleopteran hosts. In this study, an additional species is recorded for the first time from South Korea. Diagnoses of genus and an unrecorded species, as well as illustrations of this species are provided.

한국산 얼굴긴뺨자루맵시벌속(벌목: 맵시벌과: 긴뺨자루맵시벌아과)의 미기록종 보고

최 진경*
대구교육대학교 과학교육과


한국산 긴뺨자루맵시벌아과의 미기록종인 미소얼굴긴뺨자루맵시벌(신칭)을 확인하고 국내에 처음으로 보고한다. 본 종의 상위분류군인 얼 굴긴뺨자루맵시벌속은 농업과 임업 해충인 파리목, 나비목, 딱정벌레목에 내부 기생하는 것으로 알려져 있다. 본 논문에는 미소얼굴긴뺨자루맵시 벌의 기재 및 주요 형질 사진을 제공한다.

    Orthocentrinae, a subfamily of small-sized parasitoids belonging to the family Ichneumonidae, was first described by Förster (1869). Most orthocentrine species are known to be koinobiont endoparasitoids of dipteran hosts of the superfamily Sciaroidea. South Korean Orthocentrinae are poorly known however recently South Korean species of the genera Aperileptus (3 species), Apoclima (1 species), Dialipsis (1 species), Eusterinx (9 species), Gnathochorisis (5 species), Orthocentrus (26 species), Pantisarthrus (1 species), Picrostigeus (1 species), Plectiscidea (3 species), Proclitus (1 species), and Symplecis (2 species) were reviewed (Choi et al., 2014;Choi and Lee, 2018, 2020a, 2020b;Humala et al., 2016, 2018, 2020). StenomacrusFörster, 1869 is a large genus comprising 73 valid species worldwide, and mainly reported from Western Palaearctic and Nearctic regions, with only six species have been distributed in the Eastern Palaearctic (Yu et al., 2016). This genus is newly recorded in South Korea for the first time, and Stenomacrus deletus (Thomson, 1897) is reported new to the Eastern Palaearctic region.

    In this paper, the new record of Stenomacrus deletus from South Korean fauna, as well as its diagnosis and photos, are provided.

    Materials and Methods

    Images were captured with an AxioCam MRc5 camera attached to a stereo microscope (Zeiss SteREO Discovery, V20; Carl Zeiss, Gttingen, Germany), processed using the Axio- Vision SE64 software (Carl Zeiss), and optimized with a Delta imaging system (i-solution, IMT i-Solution Inc. Vancouver, Canada). The morphological terminology generally follows that of Gauld (1991). The examined specimen is deposited in the Daegu National University of Education (DNUE), Daegu, South Korea.

    Systematic Accounts

    Family Ichneumonidae Latreille, 1802 맵시벌과

    Subfamily Orthocentrinae Förster, 1869 긴뺨자루맵 시벌아과

    Genus StenomacrusFörster, 1869 얼굴긴뺨자루맵시 벌속(신칭)

    Diagnosis. Clypeus not angulate medially and hardly incurved apically; mandible with small tooth on inner edge; propodeum usually with posterior transverse and median longitudinal carinae (Broad, 2010).

    Host. [Diptera] Sciaridae: Bradysia confinis; Gracillariidae:Cameraria ulmella; Lasiocampidae:Dendrolimus albolineatus, Dendrolimus sibiricus; Noctuidae:Trichosia sinuata; [Coleoptera] Chrysomelidae:Psylliodes chrysocephala (Yu et al., 2016).

    Redescription. Australia, Austria, Belarus, Belgium, Bulgaria, Canada, Czech Republic, Denmark, Faeroe Islands, Finland, France, Germany, Greece, Greenland, Grenada, Hungary, Ireland, Israel, Jan Mayen Island, Latvia, Lithuania, Madeira Islands, Netherlands, Norway, Poland, Romania, Russia, Reunion, South Korea (new record), Spain, St. Vincent, Sweden, Switzerland, Turkey, U.S.A., Ukraine, United Kingdom (Yu et al., 2016).

    Stenomacrus deletus (Thomson, 1897) 미소얼굴긴 뺨자루맵시벌(신칭) (Fig. 1)

    Orthocentrus deletus Thomson, 1897: 2442. Lectotype: female; type locality: Sweden; type depository: ZI (Zoologiska Institutionen, Helgonavägen, Lund, Sweden).

    Redescription. Female. Body 2 mm; fore wing 1.5 mm. Head with long hairs, width 1.56 times as long as height in frontal view. Inner orbits convergent upward (Fig. 1B). Face shiny and sparsely punctate; clypeus small and separated from weak groove, apical margin of clypeus round. Malar space with distinct carina, 5.5 times as long as basal width of mandible (Fig. 1B). Temple shiny, 1.4 times as wide as eye in lateral view. Antenna with 19 flagellomeres and dense hairs; scape long, with maximum length 2.14 times as long as first flagellomere. Pronotum shiny with epomia, sparsely punctate. Mesoscutum with dense hairs; notaulus indistinct (Fig. 1C). Propodeum sparsely punctate; with distinct median longitudinal carinae. Fore wing with closed areolet, second intercubitus trace (Fig. 1E). First metasomal tergite with longitudinal striae in posterior area, 1.3 times as long as second metasomal tergite. Ovipositor sheath short, 0.6 times as long as hind tibia, with long hairs.

    Color. Generally yellowish brown to brown (Fig. 1A). Face evenly brown, upper margin of face yellow; clypeus yellowish brown; palpi and mandible pale yellow; frons and temple dark brown; antenna yellow to yellowish brown, apical flagellomeres darken. Mesosoma reddish brown to dark brown. Legs yellow. Metasomal tergites dark brown.

    Material examined. South Korea: 1♀, Gangwon-do, Wonju-si, Heungeop-myeon, Maeji-ri, Yensei Univ., 37°16′54.49″N 127°53′54.54″E, 5-23.ix.2015, H.Y. Han leg. (DNUE).

    Distribution. South Korea (new record), Bulgaria, Finland, France, Germany, Ireland, Israel, Lithuania, Netherlands, Poland, Spain, Sweden, United Kingdom (Yu et al., 2016).

    Region. Eastern Palaearctic (new record), Western Palaearctic.

    Remarks. This species is distributed in the Eastern Palaearctic region and South Korea for the first time here. As Aubert (1981) pointed out, a cubic head, fore wing with closed areolet, thick antennal flagellomeres.


    This work was supported by a grant from the Daegu National University of Education (DNUE), funded by the Republic of Korea (RC2019047).


    Stenomacrus deletus (Thomson, 1897). A, Habitus in lateral view; B. Head in frontal view; C. Head and mesosoma in dorsal view; D. Head and mesosoma in lateral view; E. Wings. Scale bars: A = 0.5 mm, B-C = 0.1 mm, D-E = 0.2 mm.


    1. Aubert, J.F. ,1981. Révision des Ichneumonides Stenomacrus sensu lato. Mitt. Münch. Entomol. Ges. 71, 139-159.
    2. Broad, G.R. 2010. Status of Batakomacrus Kolarov (Hymenoptera: Ichneumonidae: Orthocentrinae), with new generic combinations and description of a new species. Zootaxa 2394, 51-68.
    3. Choi, J.K. , Jeong, J.C. , Lee, J.W. ,2014. New Korean record of twenty eight species of the family Ichneumonidae (Hymenoptera). Anim. Syst. Evol. Diversity 30(2), 65-80.
    4. Choi, J.K. , Lee, J.W. ,2018. Four newly recorded species of Orthocentrinae Förster (Hymenoptera: Ichneumonidae) from South Korea. Entomol. Res. Bull. 34(1), 42-46.
    5. Choi, J.K. , Lee, J.W. ,2020a. Taxonomic review of the genus Plectiscidea (Hymenoptera: Ichneumonidae: Orthocentrinae) from South Korea. Anim. Syst. Evol. Diversity 36(1), 85-90.
    6. Choi, J.K. , Lee, J.W. ,2020b. First record of the genus Aperileptus Förster,1871 (Hymenoptera, Ichneumonidae, Orthocentrinae) from South Korea. J. Asia Pac. Biodivers. 13, 46-49.
    7. Förster, A. ,1869. Synopsis der Familien und Gattungen der Ichneumonen. Verhand. Naturwise. Ver. der Preussischen Rheinlande und Westfalens 25, 135-221.
    8. Gauld, I.D. ,1991. The Ichneumonidae of Costa Rica 1. Mem. Amer. Ent. Inst. 47, 1-539.
    9. Humala, A.E. , Choi, J.K. , Lee, J.W. ,2016. A review of the genera Gnathochorisis Förster and Symplecis Förster of South Korea, with notes on Korean orthocentrines (Hymenoptera, Ichneumonidae, Orthocentrinae). ZooKeys 562, 85-104.
    10. Humala, A.E. , Choi, J.K. , Lee, J.W. ,2018. Review of the genus Eusterinx Förster, 1869 (Hymenoptera: Ichneumonidae: Orthocentrinae) with descriptions of five new species from South Korea. Entomol. Sci. 21, 97-111.
    11. Humala, A.E. , Lee, J.W. , Choi, J.K. ,2020. A review of the genus Orthocentrus Gravenhorst (Hymenoptera, Ichneumonidae, Orthocentrinae) from South Korea. J. Hymenopt. Res. 75, 15-65.
    12. Latreille, P.A. ,1802. Histoire naturelle, générale et particulière, des Crustacés et des Insectes. Tome troisième. Paris. pp. 468.
    13. Thomson, C.G. ,1897. LVI. Försök till gruppering af arterna inom slägtet Orthocentrus. Opuscula Entomol. 22, 2419-2450.
    14. Yu, D.S. , van Achterberg, C. , Horstmann, K. , 2016. Taxapad2016, Ichneumonoidea 2015. Database on flash-drive. (accessed on 30 January 2020), Nepean, Ontario, Canada.