Forum Entomologi Italiani

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.

- Hoplocampa

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 (...) ?

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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

Groundless message, the erratum was made.

Groundless message, the erratum was made.

Ciao,
It is indeed aberrant Aglaostigma (s.l.) , I hope to have found the name of the species as soon as I would send of Aglaostigma to the Forum.
Saluti.
D & JP Balmer

Ciao,
It is Aglaostigma fulvipes (Scopoli 1763) ♂ aberrant.
I would give the justification when I would have finished the Tenthredo s.l. with red & black (and white) abdomen

Ciao,

I take again the argumentary of the n° 3472 which I gave in viewtopic.php?t=26257 .
It is Aglaostigma fulvipes ♂ because :
The width between their eyes who is much larger than the length of the clypeus (thus a Aglaostigma)
and :
- The hind wings do not have vein marginal.
- These wings have 2 enclosed middle cells.
- On each side of abdomen, a yellow band bordes the tergites (see photo).
- The median tergites are red .
- The scutellum is black.
- It is a ♂.
- The upper part of the mesopleurae is partially black.
One added that the vertex, of the base of the antennae to the ocelli, is black.

Let us return to our n° 3400 :
One verifies that it is described exactly in the argumentary of the n° 3472.
I added here 4 photos which who consolidate the proof that the n° 3400 & 3472 are 2 specimens of the same species.

Finally :
Our capture n° 3400 is a Aglaostigma (Astochus) fulvipes (scopoli 1763) ♂

with a beautiful new aberration on the anal cell of the forewings, that I name falseperineura

Merci à Gomphus de rectifier une éventuelle erreur de syntaxe !

Saluti.

D & JP Balmer