Scirtetes robustus

Scirtetes robustus

Scirtetes robustus is a species of parasitoid wasp in the family Ichneumonidae, subfamily Campopleginae.
Campopleginae - Cocoon freely suspended Here is an example of a cocoon being freely suspended from a leaf of some grass or the other., as opposed to the one I posted the other day, that was entangled on the leaf (and another one today - see below):
https://www.jungledragon.com/image/79318/campopleginae_cocoon.html
https://www.jungledragon.com/image/79460/campopleginae_-_cocoon_entangled.html
In addition, all seem to be next to the skins of the same kind of caterpillar. Will try to get an ID on that ... Campopleginae,Cocoon,Geotagged,Ichneumonidae,Netherlands,Scirtetes,Scirtetes robustus

Reproduction

The larvae develop in the caterpillars of various species of moths. After consuming most of the softer tissues inside of the caterpillar skin, the Scirtetes larva emerges from the host and spins an oval cocoon with quite distinctive colour pattern, usually quite near to the deserted remains of the host.
The cocoons have been observed to "jump" due to energetic movement of the larva inside, possibly a means to free the cocoon from the original silk attachment so it can drop to the forest floor in between the leaf litter in order to be better protected for winter and possibly also hidden better from hyperparasitoids.

References:

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Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassInsecta
OrderHymenoptera
FamilyIchneumonidae
GenusScirtetes
SpeciesScirtetes robustus
Photographed in
Netherlands