Ciao,
# 3400 captured in the Forest of Les-Andelys (Dépt. Eure - France) - 25.04.2000
I already sent this Symphyta on the Forum, with the name of Perineura rubi, because is the only species, having the anal cell of the forewings with a constriction, and the habitus of the Perineura-Aglaostigma-Tenthredopsis group.
That seemed so obvious that I did not examine the clypeus !
In fact it is probably an aberrant species (or new species ...).
I disregard shape of the anal vein of the forewings and I will seek the Tenthredinidae (except Tenthredininae) who check the criteria below :
Clypeus :
- Not emarginate.
Forewings :
- Radial cell divided.
- Veins 1m-cu & 2m-cu reach 2 different radial cells.
Hinwings :
- 2 enclosed middle cells.
- 1 anal cell.
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The only genus being able to be appropriate are : Hoplocampa & Mesoneura .
But
- The front edge of their clypeus is emarginate, according to Enslin 1912/1918 p.244 (Clypeus vorn ausgeschnitten) & p.263 (Clypeus ausgerandet).
- Mesoneura
- - Of after the photos or drawings which I could consult , M & 1m-cu converge, is this case for all the genus ?
- This genus has the anal cell pedonculate , being given the form of this one, it is difficult to admit that the vein 3A (which in this genus is very shortened) can be prolonged until reaching the form of loop which it has in our capture.
Thus I think that this genus cannot retained.
- M & 1m-cu are strongly convergent , these 2 veins are almost divergent in our capture.
However is it possible that a aberrant species can have M & 1m-Cu parallels and the clypeus with the edge rectilinear ? or even but very doubtful, it is a new species (...) ?
If not, it is a Tenthredininae
One observes on our species that :
1- The clypeus is rectilinear and the labrum rounded (see photo).
2 - The occipital carina is lateraly absent (I could not make photo).
3 - The distance between the base of the eyes is much larger, than the width of the clypeus and the height of an eye (see photo).
4 - The 1st tergite has a medial furrow(see photo).
5 - The inner tooth, of the tarsal claws, is about as long as end tooth and closely adpressed to it (I could not make photo showing the 2 teeth).
6 - The anal cell has a constriction(see photo).
The item 1 rejects Perineura (which has the clypeus deeply excised and the labrum triangular in shape).
The items 1 to 5 lead to Aglaostigma but the item 6 rejects it !
Is it possible that a aberrant Aglaostigma (or new species ...) can have an anal cell with contriction ?
Finally nothing is satisfactory : Hoplocampa, Aglaostigma or ... ?
Saluti.
D & JP Balmer
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