Ichneumon insidiosus

Ichneumon insidiosus

Postby tlegrand on 17 Aug 2017, 22:45

Hello,

An Ichneumoninae found in North of France, Clairmarais, the 05 august 2017, in long Grass on the edge of a mainly deciduous forest
Maybe a female Ichneumon minutorius ?

Ichneumonidae (2).JPG

Ichneumonidae (3).JPG

Ichneumonidae (5).JPG

Ichneumonidae (1).JPG

Ichneumonidae (7).JPG

Ichneumonidae (4).JPG


Greetings,

Thomas
Last edited by tlegrand on 08 Sep 2017, 10:06, edited 2 times in total.
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Re: Ichneumon minutorius ?

Postby tlegrand on 17 Aug 2017, 22:47

Pictures part 2

Ichneumonidae (8).JPG

Ichneumonidae (9).JPG

Ichneumonidae (6).JPG
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Re: Ichneumon minutorius ?

Postby Geir_Oersnes on 18 Aug 2017, 14:21

It's not minutorius. Difficult to get anywhere with the keys from the photos, it's seems to be one of the more difficult to identify Ichneumon-species...

Flagellum seems to have 38-39 segments, is that correct?

What's the size of the insect?
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Re: Ichneumon minutorius ?

Postby tlegrand on 18 Aug 2017, 16:48

Thanks you for your reply, Geir !
I'm not sure where I did go wrong in the key of Perkins, but the coloration and accutate antenna seemed to fit
I just measured it, it is around 10 mm without antenna and around 15 mm with antenna
I can count at least 36 segments for the flagellum
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Re: Ichneumon minutorius ?

Postby Geir_Oersnes on 18 Aug 2017, 19:08

I count 38 segments for the flagellum from the photos. According to descriptions in Hilpert (1992) minutorius has max. 35 segments, and also red postpetiole (petiole is all black in your specimen). The Perkins key only covers some of the Ichneumon species that's possible to find in Europe. I use Hilperts key to identify Ichneumon species, it can be downloaded here: http://www.zobodat.at/publikation_volumes.php?id=23792

Not the easiest key to use, but it got decent descriptions of the species (for the females).
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Re: Ichneumon minutorius ?

Postby tlegrand on 20 Aug 2017, 20:11

Many Thanks for your reply and for the link to the Hilperts key, Geir !

I have looked a bit into the key but I think I will need a lot of time to well understand it
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Re: Ichneumon minutorius ?

Postby Geir_Oersnes on 20 Aug 2017, 21:32

There is an English version of Hilperts key here: https://www.dropbox.com/sh/xvd7dbrypyp4 ... ?dl=0&lst=

It only includes the key (not the descriptions part)
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Re: Ichneumon minutorius ?

Postby tlegrand on 20 Aug 2017, 22:19

Thanks you, Geir ! That's great ! I'm not very familarised with german, that will certainly help me a lot
I will look into the key a bit later
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Re: Ichneumon minutorius ?

Postby tlegrand on 20 Aug 2017, 23:07

With the key of the females, I get to Ichneumon insidiosus ? but I'm not totally sure of my proposal identification

I add a picture where the gastrocoeli and the tergites coloration are more visible
Attachments
Ichneumoninae (11).JPG
Ichneumoninae (10).JPG
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Re: Ichneumon minutorius ?

Postby Camille Thirion on 24 Aug 2017, 18:19

probably insidious?
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Re: Ichneumon minutorius ?

Postby tlegrand on 24 Aug 2017, 20:32

Thanks you very much Camille for your answer !
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