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| 1 | 2 |  » Stats |
Members: 50,154
Threads: 82,343
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Top Poster: glsammy (15,069)
| | Welcome to our newest member, NielsC | |  | 
06-03-2011, 07:35 PM
|  | Officer of the Wild Empire | | Join Date: May 2007 Location: Bridport, Dorset.
Posts: 663
| | | Caused by Gall Wasp?
Found these today in a nature reserve. Both around 3-5 cms long, one on a bramble stem, the other on Scabious, or possibly Knapweed.
Am I correct in assuming they are initially caused by a type of Gall Wasp, and the holes are grub exit holes? Would the same insect be responsible for both items in the picture?  |
06-03-2011, 07:42 PM
|  | Knight Grand Cross of the Wild Empire | | Join Date: Nov 2006 Location: North Yorkshire
Posts: 10,729
| | | Re: Caused by Gall Wasp?
Yes this is the work of Diastrophus rubi. |
07-03-2011, 09:18 PM
| | Officer of the Wild Empire | | Join Date: May 2007 Location: Bridport, Dorset.
Posts: 663
| | | Re: Caused by Gall Wasp?
Thank you, Dogghound, much appreciated. |
07-03-2011, 10:08 PM
|  | Commander of the Wild Empire | | Join Date: Apr 2007
Posts: 1,238
| | | Re: Caused by Gall Wasp?
Jennie, that's a nice find: it's not particularly common, although it's distribution is clumped. It seems to be more frequent (or easier to find) on Dewberry Rubus caesius.
If you want to PM me with details I'll send them onto the Plant Gall Society recorder.
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