Forum lépidoptèra

Papillon Inscrit le : 04 Nov 2004 Messages : 108 Localisation : Italy

I'm rearing several suraka larvae since L1 successfully on Nerium oleander.
But today some of the L5 started to have suddenly strange symptoms of suffering: they start to vomiting or have diarrhea and twist, then they fall on the bottom of container and continue to twist and loose green liquid from the mouth.
I don't think it is a disease but some plant with some insecticide (altough I wash plants in water for 30 minutes before offering to larvae) .
Or maybe it can be some little Acarus who remain on washed leaves?
I saw a similar sympthoms with several others Saturniidae in the past and also with plants which probably are not treated by insecticide (es. Rubus fruticosus).

http://www.ecosicilia.net/suraka.avi

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Mario
http://www.ecosicilia.net/saturniaweb

Papillon Inscrit le : 17 Oct 2005 Messages : 256 Localisation : meuse

pas de probleme pour mes L5 actuellement elevees sur ligustrum ovalifolium.
je pense aussi que ton probleme est plus d'origine chimique que viral.
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@+ j-claude

Papillon Inscrit le : 04 Nov 2004 Messages : 108 Localisation : Italy

My "poisoned" larvae recovered a little yesterday after being kept the day before "drowning" in tiepid water for 15 minutes and then let dry on a paper-towel.
Maybe it was a stupid trick but I had wanted to try anyway!
Today they are feeding! :Dange:

The other larvae seemed to be not affected by the insecticide in
leaves.
Yesterday I provided Nerium oleander branches from another source and washed leaves keeping them in a solution of water + bi-carbonate and then with a solution
0,5% of bleach!
Then I rinsed well the branches and gave to the larvae,
which since yesterday are feeding without warning symptoms.
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Mario
http://www.ecosicilia.net/saturniaweb