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25-01-2008, 02:39 PM
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Oak Gall - ID?
This funny little sticky brown 'house' is found on Quercus pubescens, in great numbers in some years. Perhaps on other oaks? Anyone a name??
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25-01-2008, 03:40 PM
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I've never seen this and can't find anything like it for Europe although some USAmerican sites show something similar .... Is this a relatively recent phenomenon?
Looks rather like a tiny toadstool coated in chocolate. 
Shall be interested to know what you discover ....
Quote:
Originally Posted by ericrovve
This funny little sticky brown 'house' is found on Quercus pubescens, in great numbers in some years. Perhaps on other oaks? Anyone a name??
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"Never ascribe to malice that which is adequately explained by incompetence."
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Last edited by paul m; 25-01-2008 at 03:41 PM.
Reason: typo
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25-01-2008, 04:26 PM
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"Shall be interested to know what you discover ...."
Well I've googled it to death and got nowhere - except that it's probably either a wasp or midge. Saw it first some years ago, and then again out walking today.
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25-01-2008, 10:28 PM
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Looks a lot like this I think.
From this page
Quote:
Quercus ilex L.
* Andricus (Cynips) dentimitratus (REJTÖ)
* (Hym.) Gallwespe, B: 5538
* Foto: Lutz Thilo Wasserthal Frankreich, 1977
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Of course, with a (genus) name it should be easier to google for more 
Cheers
Arp |
26-01-2008, 07:29 AM
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Andricus (Cynips) dentimitratus
Ah! Thanks Puddings, I think you've got it!! Never seen it on Holm oak, though,
Eric
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26-01-2008, 02:06 PM
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Quote:
Originally Posted by ericrovve
Never seen it on Holm oak, though
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Never seen at all to be frank.
Actually the link I gave you must have been a lucky find (the first page I checked), as most of my other links for Galls come up empty.
FE seems to think your find is somewhat special - they don't list A. dentimitratus for the UK! And from the general distribution pattern, I'd say it looks like a fairly southern/eastern species.
So, either it's not A. dentimitratus after all, or FE is lagging behind, or you have a find that's probably worthwhile listing somewhere?!
Finding more info is probably a bit of a headache seeing the list of "old names" that FE alone has for the critter 
Exciting stuff though!
Arp |
26-01-2008, 03:57 PM
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"I'd say it looks like a fairly southern/eastern species."
That's about right for me. And thanks again. BTW, not good on insects, so wass FE?
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26-01-2008, 04:57 PM
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Quote:
Originally Posted by ericrovve
BTW, not good on insects, so wass FE?
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That be Fauna Europaea, not a perfect/flawless reference (but what is?), but a fair starting point if you want to find out about European species and their distribution.
About where in Britain did you find the Gall? Somewhere in South-England?
Arp |
27-01-2008, 07:27 AM
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"About where in Britain did you find the Gall? Somewhere in South-England?"
No, I'm in Southern France
Valderoure flowers
Eric |
27-01-2008, 10:35 AM
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Quote:
Originally Posted by ericrovve
No, I'm in Southern France
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Oooohwww, the SHAME .... :-| .... must have only looked at the message contents and overlooked your "Location" data ... I'll get my eyes switched on at some point yet  |
27-01-2008, 04:01 PM
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Pas grave!
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