Ichneumonidae in july => Spilichneumon occisorius M

Ichneumonidae in july => Spilichneumon occisorius M

Postby 1KristianS on 21 Feb 2017, 22:14

Beautiful Ichneumonidae collected by the coast, South of Norway in july. Possible to ID?
Attachments
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Last edited by 1KristianS on 04 Mar 2017, 23:35, edited 1 time in total.
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Re: Ichneumonidae in july

Postby 1KristianS on 21 Feb 2017, 22:16

more
Attachments
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Re: Ichneumonidae in july

Postby Geir_Oersnes on 22 Feb 2017, 00:05

It's a male, subfamily Ichneumoninae, tribus Ichneumonini. Think it could be Diphyus, but I'm not sure (the males are usually very variable in colouration).
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Re: Ichneumonidae in july

Postby 1KristianS on 27 Feb 2017, 09:35

Thanks Geir, I guess it will remain a mystery.
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Re: Ichneumonidae in july

Postby Gunnar on 27 Feb 2017, 10:08

It will not remain a mystery, Per Kristian! You have got your Diphyus male on a needle, and when (not if) in a few years (I hope) there is a revision of Diphyus available, you can put it under your microscope again.
At the moment there are lots of work done around the world with revision of Ichneumonid genera. And there can and will be changes in taxonomy when DNA sequencing and mitochondrial markers are studied for all genera. Lots of renaming then have to be done. That is one of the main reasons why it is so important to collect your Ichneumons and not just take a photo outdoors.
Just be patient, you are a young man!

I have not checked if this one is Diphyus or not. You may get an answer before late from an expert.

I have done just a little more research: May be Spilichneumon occisorius?
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Re: Ichneumonidae in july

Postby Geir_Oersnes on 27 Feb 2017, 15:55

Spilichneumon occisorius might be a good idea.

Per Kristian - could you take photos of the hypopygium from the underside (the last sternites)? And attempt to photograph the tyloids on the antenna (if possible, it's sometimes a little difficult, they should be on the sides of the antenna).
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Re: Ichneumonidae in july

Postby Camille Thirion on 27 Feb 2017, 16:51

also seemed to me! :wink:
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Re: Ichneumonidae in july

Postby 1KristianS on 27 Feb 2017, 22:09

Gunnar: Thanks again! Exciting times ahead for sure! Couldnt agree more. Unidentified specimens will ofcourse be kept safe for future investigations.

Thanks Geir! Attached are some more photos. You are right, the tyloids are difficult to photograph! I had to try out some experimental lightning, but not too happy with the results. Anyway, attached are the results, which show the shapes I see in my stereomicroscope.
Attachments
d4.jpg
d3.jpg
d2.jpg
d1.jpg
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Re: Ichneumonidae in july

Postby Geir_Oersnes on 28 Feb 2017, 00:01

On which segments are the tyloids? (first and last segments tyloids appear on)
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Re: Ichneumonidae in july

Postby 1KristianS on 28 Feb 2017, 00:50

I will have a closer look at which segments are missing tyloids. I have put numbering on the segments on the Ppictures below, counted from base of antenna.
Attachments
f2.jpg
f1.jpg
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Re: Ichneumonidae in july

Postby 1KristianS on 28 Feb 2017, 10:04

These tyloids are quite difficult to see and count on long bended antennas like this, but as far as I can see, segment 1 - 3 is without tyloids. Segment 4 - 20 is with tyloids. Segment 21 and rest is without.
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Re: Ichneumonidae in july

Postby Gunnar on 28 Feb 2017, 12:16

I send you Perkins part 2 by mail, then you can try the key yourself;

page 184 - 189
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Re: Ichneumonidae in july

Postby 1KristianS on 28 Feb 2017, 14:45

Thanks! I have read the key now, seems like the tyloids from segment 4 (no tyloids on 1-3) and onwards gave us the answer! Spilichneumon occisorius. Thanks again guys!
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Re: Ichneumonidae in july

Postby Camille Thirion on 01 Mar 2017, 12:10

Why not?

see cthirion.eu
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