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Key to Nordic Acaenitinae
AcaenitinaeM
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Hymenoptera
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Ichneumonoidea
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Ichneumonidae
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Acaenitinae
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Taxa:
Metasoma
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1. Metasoma black.
2. Metasoma with at least one tergite predominantly red.
3. Metasoma black with a white apical stripe on the first and second tergites.
Areolet
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1. Areolet closed.
2. Areolet open distally.
3. Areolet open proximally.
Notauli
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Notauli present.
Notauli absent or very weak.
Claws
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Claws on all tarsi with a subapical tooth.
Claws on the front and middle tarsi with a subapical tooth, claws on hind tarsi without.
Claws on all tarsi without teeth.
Nervellus
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Nervellus of hind wing intercepted below the upper 0.25. Relatively small species.
Nervellus of hind wing intercepted at or around the upper 0.25. Large and slender species.
Propodeum
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Propodeum with strong carination.
Propodeum without or with weak carination.
Face
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Face completely yellow or with a short black stripe in the upper part.
Face centrally black.
Hind tarsi
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Hind tarsomeres 1-5 yellow or ivory.
Hind tarsomeres 3-5 yellow or ivory.
Hind tarsi not white ivory, usually reddish or dark.
Hind trochanters
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Hind trochanter reddish or yellowish.
Hind trochanter black or darkened.
Malar space
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Malar space around 0.8 times the width of the base of the mandible.
Malar space not more than 2/3 the width of the base of the mandible.
Remaining taxa:
Acaenitus dubitator
Arotes albicinctus
Coleocentrus caligatus
Coleocentrus croceicornis
Coleocentrus exareolatus
Coleocentrus excitator
Coleocentrus heteropus
Coleocentrus soleatus
Mesoclistus cushmani
Mesoclistus rufipes
Phaenolobus saltans
Phaenolobus terebrator
Procinetus decimator
Discarded taxa:
Info
This key covers all known northern European species of Acaenitinae. Contact me if you find any errors or points of confusion.
References
Bischoff, H. (1915). Eine neue deutsche Ichneumonide. (Hym.). Coleocentrus soldanskii. Deutsche Entomologische Zeitschrift 1915(1): 75–76.
Broad, G.R., Shaw, M.R. & Fitton, M.G. (2018). Ichneumonid wasps: (Hymenoptera: Ichneumonidae): Their classification and biology. Handbooks for the Identification of British Insects. Vol. 7, Part 12. Royal Entomological Society.
Finlands Artdatacenter (2024). Acaenitinae. LAJI.FI. Retrieved July 3, 2024.
https://laji.fi/sv/taxon/MX.308519
Johansson, N. & Wikars, L. (2024). Review of the Swedish species of Coleocentrus Gravenhorst, 1829 (Hymenoptera: Ichneumonidae: Acaenitinae) with an illustrated key to the Western Palearctic species. Entomologisk Tidskrift 145(3): 87–100.
Medvedev, G.S. (ed.) (1986). Opredelitel nasekomykh evropeiskoi chasti SSSR. T. 3. Pereponchatokrylye. Ch. 3. Akademiia Nauk SSSR Zoologicheskii Institut. Nauka, Leningrad.
SLU Artdatabanken (2024). Acaenitinae. Artfakta. Retrieved July 3, 2024.
https://artfakta.se/taxa/1000026
Varga, A. (2013). A review of the subfamily Acaenitinae Förster, 1869 (Hymenoptera, Ichneumonidae) from Ukrainian Carpathians. Biodiversity Data Journal 1: e1008.
https://doi.org/10.3897/BDJ.1.e1008
Zwakhals, C.J. (1989). [The Acaenitinae from the Netherlands and the host of Acaenitus dubitator (Hymenoptera: Ichneumonidae).] (in Dutch with English summary). Entomologische Berichten 49(2): 21–25.
