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02-04-2010, 09:35 AM
|  | Officer of the Wild Empire | | Join Date: Nov 2007 Location: West Yorkshire
Posts: 526
| | | Marble gall cutie ID
Hatched this little fella from an oak marble gall on the 16th march.It does not look like Andricus Kollari to me! Any ideas?
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02-04-2010, 09:59 AM
| | Wild Member | | Join Date: May 2009 Location: Herts
Posts: 182
| | | Re: Marble gall cutie ID
It looks like a female pteromalid of some sort that has obviously made short work of the original occupant.
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02-04-2010, 10:00 AM
|  | Knight Grand Cross of the Wild Empire | | Join Date: Nov 2006 Location: North Yorkshire
Posts: 10,729
| | | Re: Marble gall cutie ID
I agree, its not a gall wasp. |
05-04-2010, 08:56 PM
| | Active Member | | Join Date: Dec 2008
Posts: 35
| | | Re: Marble gall cutie ID
Just seen this. A female chalcid parasitoid. Looks like Eurytomidae. Can't see the wing venation. Did it have a dark cloud mark on each forewing? . Black body with some yellowish tan markings. If so then Sycophila biguttata. If not (all black body) Eurytoma brunniventris. |
06-04-2010, 11:49 AM
| | Officer of the Wild Empire | | Join Date: Nov 2007 Location: West Yorkshire
Posts: 526
| | | Re: Marble gall cutie ID
Thankyou Torymus! I have no idea of either a black marking on wing or tan markings on body. i took about 15 pics of the little thing and none of them conclusively revealed either. also just this minute released several more from the same gall then saw your reply!  
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Eucera: 'a quick squint at the goolies will get you the answer in no time at all'. |
06-04-2010, 02:32 PM
| | Active Member | | Join Date: Dec 2008
Posts: 35
| | | Re: Marble gall cutie ID
There would have been males and females (probably) - the antennae of the male look quite different to the those of the female (if Eurytoma) - so any picture of bits of antennae or the Y shape on the forewing would help ID. |
06-04-2010, 04:15 PM
| | Officer of the Wild Empire | | Join Date: Nov 2007 Location: West Yorkshire
Posts: 526
| | | Re: Marble gall cutie ID
All the pics i took are of the same individual. This is the best i can do regarding wings.I love this one though cos of the behaviour!
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06-04-2010, 09:53 PM
| | Active Member | | Join Date: Dec 2008
Posts: 35
| | | Re: Marble gall cutie ID
Lovely photo - female cleaning her antennae. The wing venation is not clear but it is not Sycophila - therefore although it is impossible to indentify properly there is only one known species of Eurytoma that parasitises A. kollari ie E. brunniventris. The male antennae would have made a good shot too as they are longer than female antennae and have whorls of hairs. This species is quite common and parasitises many of the oak gall causers. |
07-04-2010, 09:01 AM
| | Officer of the Wild Empire | | Join Date: Nov 2007 Location: West Yorkshire
Posts: 526
| | | Re: Marble gall cutie ID
Thankyou very much Torymus. I will remember the extra info you have given and bring it into play next time! 
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