Ich
Ichneumonoidea
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Key to Nordic Ichneumonoidea
Ichneumonoidea
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Hymenoptera
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Ichneumonoidea
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Steps
Steps
Taxa:
Wings
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Wings fully developed.
Wings reduced or absent.
2m-cu
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Forewing vein 2m-cu present.
Forewing vein 2m-cu absent.
Tergites
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Tergites 2 and 3 fused (though a suture is often visible), forming a single syntergite with two pairs of spiracles.
Tergites 2 and 3 not fused.
Face
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Cyclostome (face with hypoclypeal depression above mandibles).
Not cyclostome. Clypeal sulcus distinct.
Not cyclostome. Clypeal sulcus absent.
Hind wing
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Hind wing venation reduced, nervellus absent.
Hind wing venation not reduced, nervellus present.
Tergite 1
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Tergite 1 with the spiracles clearly behind middle.
Tergite 1 with spiracles at or in front of middle.
Remaining taxa:
Braconidae
Braconidae (part)
Braconidae (Aphidiinae, part)
Braconidae (Aphidiinae, some)
Ichneumonidae
Ichneumonidae (part)
Ichneumonidae (some)
Ichneumonidae (some genera)
Ichneumonidae (a few)
Discarded taxa:
Info
This small key separates the two families of Ichneumonoids, which can be easier said than done due to their great diversity.
References
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.
Shaw, M.R. & Huddleston, T. (1991). Classification and biology of Braconid wasps (Hymenoptera: Braconidae). Handbooks for the Identification of British Insects 7(11): 1–126.
