Typus (n° 3355) : Capture in Cne : Lavilletertre (dépt. Oise) - 25 VI 1999
var. (n° 5145) : Capture in Cne : Colméry (dépt. Nièvre) - 22 VI 2012
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Biblio :
- Benson 1952 : RES - Handbooks ... Symphyta ... Vol. VI 2(a) & 2(b)
... on the Net (see with http://www.royensoc.co.uk/content/out-print-handbooks )
- Berland 1947 : Faune de France ... Hymenoptera Tenthredoïdes
.. http://www.faunedefrance.org/bibliotheq ... doides.pdf
- Enslin 1912/1918 : Die Tenthredinoidea Mitteleuropas
- Smith 1969 : Nearctic Sawflies ... Blennocampinae ... in” Technical Bulletin No. 1397 - U.S. Dept. of Agri.”
... http://ageconsearch.umn.edu/bitstream/1 ... tb1397.pdf
- Zhelokhovtsev 1988 : in Medvedev (Ed.) - Keys ... USSR. III. Hym. Part 6 Symphyta (Translation in English 1994)
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Please excuse the bad quality of photos.
Besides, to highlight the determining characters, I have modified the lightings of insects, where from the differences of color of photos.
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The 2 perforations between the VeinsC and R on the Forewings of n° 3355 result from clumsiness during the preparation of the insect.
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* Det. of sub-Family Blennocampinae (sensu Berland) , see :
* Determination of Genus & species
- Characteristics of our captures :
- Antennae with segment 3 shorter than segment 4
Flagellum with segments apically widened (see photos)
The Veins M & 1m-cu do not converge the one on the other one
Veins A2 & A3 divergent (see photos & drawing)
Hindwings with one Cell 1M closed
Mesepisternum with a raised front rim (colored in green on photos)
Claws with a long inner Tooth (see photos)
But there is good reason to differentiate these captures :
- The Typus (n° 3355) of species has :
- The Body elongate [ratio (length of insect/width of Thorax at level of Cenchri) = 3.77]
The apex of the Sawsheat & of its hairs are more or less at the same level (see photo)
- The Body stout [ratio (length of insect/width of Thorax at level of Cenchri) = 3.00]
The apex of the Sawsheat's hairs exceeding amply the apex of the Sawsheat (see photo)
Remark on the shape of the Abdomens of the 2 captures :
For the same species, by drying, there are insects of which the abdomen collapsed (as here the var.) and others no (as here the Typus), I do not know the reason [Rigidity or/and thickness of the Integument, etc. ?
A contrario, being given the method which we use to prepare the insect, the length of the Abdomen is never modified.
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aterrima was also captured in Italy
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