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Silpha alpestris Kraatz, 1876 Species details

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PostPosted: 23/06/2010, 15:29 
 

Joined: 13/06/2010, 17:11
Posts: 11
Nome: DeTailes
What is this bug? It is Silpha sp.???

Silpha sp..?
Silpha.JPG



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 Post subject: Re: Silpha sp?
PostPosted: 23/06/2010, 15:57 
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Joined: 30/12/2009, 22:20
Posts: 31564
Location: Roma
Nome: Maurizio Gigli
This image is too dark to identify the specie. I can just confirm it is a Silpha sp.

Could you try to send a better photo? It's better if it's possible to see also the head and legs!

Please add the collecting data and size.

I tried to improve your photo, but it's not possible to get what there is not in the original one!

Silpha.JPG


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 Post subject: Re: Silpha sp?
PostPosted: 23/06/2010, 16:02 
 

Joined: 13/06/2010, 17:11
Posts: 11
Nome: DeTailes
Czech Republic, 22.6.2010, on strawberries.


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PostPosted: 26/06/2010, 7:36 
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Joined: 30/12/2009, 22:20
Posts: 31564
Location: Roma
Nome: Maurizio Gigli
In my opinion this is a Silpha alpestris Kraatz, 1876.
But I can't be completely sure without a better photo. There is a possibility it is Silpha tyrolensis Laicharting 1781.
Usually this second species is brownish, but there are also totally black specimens.
Could you check if there are 3 costae on each elytron (tyrolensis) or just 1 (alpestris - only the external costa, the other two are very difficult to see)?

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