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07-11-2009, 07:57 PM
|  | Commander of the Wild Empire | | Join Date: Jun 2009 Location: SW London
Posts: 2,050
| | | Is this a Willow aphid?
Or if not what is it. About 6mm long. On runner beans, stayed put even when I moved the leaves.
When I looked up willow aphid the article said they dont have males - is that the case? 
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07-11-2009, 08:40 PM
|  | Knight Grand Cross of the Wild Empire | | Join Date: Jul 2007 Location: London
Posts: 11,453
| | | Re: Is this a Willow aphid?
Evening Lori!
Certainly looks like one to me - I take it you found it in the Herb Garden of BP? That's where I found mine - my first ever, in fact. Big things, aren't they! A fair few aphids lack males I've heard, but I thought those with wings were males? Not too sure.
Take care, Jason  |
07-11-2009, 08:44 PM
| | Commander of the Wild Empire | | Join Date: Jun 2009 Location: SW London
Posts: 2,050
| | | Re: Is this a Willow aphid?
Yes it was! THat's what made me check your report  It is big isn't it. Not what I would have expected for an aphid - maybe it's the same one 
Here's hoping there will be something left as there is a Firework display right now. I'll add that to my list.
Thanks.
Lori
PS does it live on wilow then? I'm not sure where the nearest to that garden is...
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07-11-2009, 08:59 PM
| | Knight Grand Cross of the Wild Empire | | Join Date: Jul 2007 Location: London
Posts: 11,453
| | | Re: Is this a Willow aphid?
Pleasure.
No males have been recorded of T. salignus, I've just read. Apparently the females can be both winged or not, with temperatures appearing to dictate whether they grow them. They live on both Willow and Sallow, prefering the trunks to leaves. Not sure why we both found it away from said trees then!
A line from BugGuide about reproduction: [It's] genetically incompatible with sexual reproduction and reproduces parthenogenetically year-round. |
07-11-2009, 09:48 PM
| | Commander of the Wild Empire | | Join Date: Jun 2009 Location: SW London
Posts: 2,050
| | | Re: Is this a Willow aphid?
I found this - it's a US site but same aphid...
Finally, one of the batches of eggs will hatch as winged females (still no males!). These females will use their wings to fly to some other species of ]plant. So far, all the aphids born had been living on and munching a willow tree.
These winged females will lay eggs on the new plant. These eggs will hatch as wingless females (again!). Several more generations will continue to be born, all as wingless females. Then, finally, another batch of winged females will be born. These females will fly back to the willow tree where they started. There, they will lay eggs which are, again, wingless females.
I'll have to check what Salix they have around.
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08-11-2009, 04:53 PM
|  | Commander of the Wild Empire | | Join Date: Jan 2007 Location: South Northants
Posts: 3,284
| | | Re: Is this a Willow aphid?
Lori - I hope you don't mind me posting these two images in your thread in response to jaguarondi's post - Bruce .
The aphid with wingbuds was found on a fence below willow. There were quite a few of them, some winged, some wingless and a few with wing buds. See these two pics taken on the same fence on the same day:  
See also this thread posted last year: Giant Willow Aphid - various forms
Bruce
Last edited by Bruce Williams; 08-11-2009 at 04:56 PM.
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