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Trematopygus
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Key to northern European Trematopygus
Trematopygus
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Hymenoptera
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Ichneumonoidea
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Ichneumonidae
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Ctenopelmatinae
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Trematopygus
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Steps
Steps
Taxa:
Propodeum
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Propodeum with a pair of denticles projecting posteriorly at level of hind coxae.
Propodeum without denticles at level of hind coxae.
Flagellum coloration
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All flagellomeres more or less reddish.
Flagellomeres mostly reddish, apical flagellomeres black.
Most flagellomeres black or brownish, basal flagellomeres, scape and pedicel reddish.
Most flagellomeres black or brownish, basal flagellomeres reddish. Scape and pedicel black.
All flagellomeres black or brownish.
Dorsal carinae
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Dorsal carinae of tergite 1 distinct.
Dorsal carinae of tergite 1 absent or very weak.
Ovipositor sheaths
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Ovipositor sheaths long, almost twice as long as first segment of hind tarsus.
Ovipositor sheaths shorter, nowhere near twice as long as first segment of hind tarsus.
Flagellum
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Flagellum stout, 20th flagellomere at most as wide as long.
Flagellum more slender, 20th flagellomere slightly longer than wide.
Areolet
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Areolet usually at least partially closed (check both wings).
Areolet open.
Head
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Excavation of head rounded.
Excavation of head relatively sharp.
T. helleni / T. rufator
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Lower half of clypeus reddish. Temples polished and with fine but distinct punctation. Subgenital plate black.
Clypeus at most reddish along lower margin. Temples with distinct microsculpture and with indistinct punctation.
Remaining taxa:
Trematopygus dubitor
Trematopygus helleni
Trematopygus lethierryi
Trematopygus melanocerus
Trematopygus nigricornis
Trematopygus rufator
Trematopygus ruficornis
Trematopygus spiniger
Trematopygus terebrator
Trematopygus vellicans
Discarded taxa:
Info
This key includes all species of Trematopygus that occur in Northern Europe. It only works for female specimens.
References
Hinz, R. (1985). Die paläarktischen Arten der Gattung Trematopygus Holmgren (Hymenoptera, Ichneumonidae). Spixiana 8(3): 265–276.
Idar, M. (1981). Några för Sverige nya parasitsteklar. Entomologisk Tidskrift 102: 138–140.
Yu, D.S.K., van Achterberg, C. & Horstmann, K. (2016). Taxapad 2016, Ichneumonoidea 2015. Database on flash-drive. Nepean, Ontario, Canada.
