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| 1 | 2 |  » Stats |
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12-02-2010, 11:13 AM
|  | Commander of the Wild Empire | | Join Date: Aug 2008 Location: Saddleworth
Posts: 4,134
| |  Oak Galls
Hi everyone,
grateful for some help - I think this is common spangle gall, Neuroterus quercusbaccarum with small marble galls on this oak leaf, any ideas/confirmation please?
I didnt think marbles came that small (about pinhead or maybe double that).
Flattish spangles on the leaf body, marbles on the leaf veins.
Cheers
Ken 
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Sensible Mole, said Ratty, perceiving Old Burton Beer.....
Last edited by diggleken; 12-02-2010 at 11:15 AM.
|
12-02-2010, 12:05 PM
|  | Commander of the Wild Empire | | Join Date: Oct 2005 Location: Lincolnshire
Posts: 1,416
| | | Re: Oak Galls
I think you're correct with common spangle.
The other galls look like they're small pea galls, Agent: Cynips divisa. |
12-02-2010, 12:59 PM
| | Commander of the Wild Empire | | Join Date: Aug 2008 Location: Saddleworth
Posts: 4,134
| | | Re: Oak Galls
Excellent, thanks Nutmeg!
After your steer, found this, so they are also known as currant galls it seems? Hymenoptera - Gall Wasps (Cynipidae)
Poor tree, also has Knopper galls.
Cheers
Ken
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Sensible Mole, said Ratty, perceiving Old Burton Beer..... |
16-02-2010, 08:26 PM
| | Active Member | | Join Date: Dec 2008
Posts: 35
| | | Re: Oak Galls
Only just seen this thread. The spangle galls are Neuroterus quercusbaccarum and they are of the agamic generation. The females from these will start emerging any day now. The currant galls that you mention are the galls of the spring sexual generation on oak catkins (and leaves) that these females will "cause". The galls hang on the catkins rather like redcurrants.
The other galls on the leaf are probably those of Neuroterus anthracinus (the latest name) - often called oyster galls. The galls are small and if you look at several of the leaf veins you can see the "scar" where a gall has already fallen off the leaf. |
18-02-2010, 02:53 PM
| | Commander of the Wild Empire | | Join Date: Aug 2008 Location: Saddleworth
Posts: 4,134
| | | Re: Oak Galls
Thanks a lot Torymus, better late than never! 
These galls are much more numerous than I thought........not only lots of different species, but once you get your eye in, they are everywhere.
Much like most other wildlife really I suppose, once your eyes are opened!
Cheers again
Ken
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Sensible Mole, said Ratty, perceiving Old Burton Beer..... |
22-02-2010, 02:00 PM
|  | Knight Commander of the Wild Empire | | Join Date: Nov 2006 Location: West Molesey, Surrey
Posts: 5,527
| | | Re: Oak Galls
Can I see Silk Button Gall on there too? |
22-02-2010, 02:04 PM
| | Commander of the Wild Empire | | Join Date: Aug 2008 Location: Saddleworth
Posts: 4,134
| | | Re: Oak Galls
I think so Adam, two towards the top, possibly one more older one?
Cheers
Ken
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Sensible Mole, said Ratty, perceiving Old Burton Beer..... |
25-02-2010, 04:27 PM
| | Active Member | | Join Date: Dec 2008
Posts: 35
| | | Re: Oak Galls
All Neuroterus quercusbaccarum -spangle gall. Silk button N. numimalis is much more inrolled. However it is very common to find galls of several species together on one leaf. The adults are very similar too and both species will start emerging soon. |
27-02-2010, 08:24 AM
|  | Dame Commander of the Wild Empire | | Join Date: Feb 2006 Location: North Kent
Posts: 9,725
| | | Re: Oak Galls
I found out the other day that ink was made out of oak galls during the Tudor period.
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