Lissonota sp. (Gravenhorst, 1829)

Scientific name: Lissonota sp. (Gravenhorst, 1829)
Common name:
French name:
Order: Hymenoptera
Family: Ichneumonidae
Wingspan : Body of variable size by generally about 10 mm.
Biotope:
Geographic area: The Lissonota genus is found worldwide. There are 134 species listed in Europe.
Observation period :

You can easily tell Ichneumon wasps apart with their elongated body showing a slender waist between the thorax and the abdomen, with their unbent antennae with many articles, with their wings showing reduced venation and pterostigmata on the fore wings and with a long ovipositor on females.
Then going further is becoming very complicated because there are many species and it is often impossible to tell specimens apart with only pictures from the fields.
You can tell apart the Ichneumon wasps of the Banchinae sub-family with their rather short first tergite of the abdomen with a short petiole, the spiracle being located before the centre, with their flattened or cylindrical abdomen, with the 2m-cu vein on the fore wing being interrupted by a single small white patch (or bulla) and with the prominent sub-genital plate at the rear of the abdomen.
Here are some characteristics of the Lissonota genus (not a complete list).
The wings are clear. The aerola is triangle-shaped. The face is not totally black. The antennae are as long as or longer than the body. The females' ovipositor is as long as or longer than the body. The metapleuron, side plate on the back of the thorax, shows a lobe.


Lissonota sp. - Yvelines, France - July 17th 2011
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Lissonota sp.
In fact, I have identified this Ichneumon wasp as a member of the Lissonota genus by browsing several photo galleries and finding great similarities with some specimens listed in this genus.
This is not a very rigorous method and the risk of erroneous conclusion is high.
The veins of the fore wing are visible on the non-reduced picture. The aerola is triangle-shaped and there is only one "bulla" on the 2m-cu vein.
The first tergite of the abdomen is rather short and the antennae are as long as the body.
I am not enough skilled and/or the picture does not show enough information to evaluate the other criteria. However I have not found anything contradictory with my first conclusion.
Ah I was forgetting. No ovipositor, this one is a male.

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