Ichneumon suspiciosus

Ichneumon suspiciosus

Postby tlegrand on 14 Oct 2017, 17:07

Hello,

An Ichneumoninae found in North of France, Cassel, the 14 october 2017, under bark of a fallen Tree, in a forest
I first thought this was Ichneumon suspiciosus but it is Ichneumon stramentarius again ?


Greetings,

Thomas

Ichneumonidae (13).JPG

Ichneumonidae (10).JPG

Ichneumonidae (15).JPG

Ichneumonidae (16).JPG

Ichneumonidae (14).JPG

Ichneumonidae (12).JPG
Last edited by tlegrand on 19 Oct 2017, 20:22, edited 1 time in total.
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Re: Ichneumon stramentarius ?

Postby tlegrand on 14 Oct 2017, 17:08

2nd part

Ichneumonidae (11).JPG
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Re: Ichneumon stramentarius ?

Postby Camille Thirion on 18 Oct 2017, 15:20

Seems suspiciosus!

from Perkins

Beautiful picture!
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Re: Ichneumon stramentarius ?

Postby tlegrand on 18 Oct 2017, 21:54

Thanks you very much for your reply and the compliments about the pictures, Camille !

I find these two species very confusing to separate
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Re: Ichneumon stramentarius ?

Postby Geir_Oersnes on 19 Oct 2017, 12:06

I've attached photos of coxa III ventral surface of Ichneumon stramentarius septentrionalis female from my collection, for comparison. Note the narrow "ridge" in the inner ventral part, which has very dense sculpture (and a weak scopa/hairy patch, along the ridge, makes surface sculpture hard to see through the hairs). This is difficult to make good photos of, but I hope it helps. Your specimen in this thread seems to lack this ridge (has no hairy patch) and also have less dense sculpture ventrally.
Attachments
coxa III ichneumon septentrionalis.JPG
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Re: Ichneumon stramentarius ?

Postby Camille Thirion on 19 Oct 2017, 14:12

No scopa...hairs only!
hind coxa finely punctate becoming rugose apically=stramentarius septentrionalis ok!
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Re: Ichneumon stramentarius ?

Postby tlegrand on 19 Oct 2017, 15:00

Thanks you very much for your replies Geir and Camille ! And Geir for your wonderful picture of the hind coxa ! It is Very helpful indeed !

I have compared the hind coxa sculpture with this other specimen : viewtopic.php?f=15&t=15929 with this one in this post (unfortunately the picture of the hind coxa in the other one is much more blurrier and the a angle is slightly different too). I have trouble to see good differences in sculture of hind coxa between the two
but it seems that indeed the hind tasus is darker in Ichneumon suspiciosus than in Ichneumon stramentarius
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