Poplar hornet moth

[Peter]

Bit more info here, pages 6-9.

 

http://www.forestry.gov.uk/pdf/FR0102pests.pdf/$FILE/FR0102pests.pdf

[RobRainford]

I will have a look on science direct for any articles. Might pull something up.

[Peter]

Came across this beauty today.

[Tony Croft aka hamadryad]

wow is that drilling via these hawk moths?

[Peter]

Yes, that is a lot of holes, but I would say pretty much any poplar in East Anglia will have some present.

 

I have anecdotal evidence that smaller trees affected by boring have failed due to white rot at the same level as the boring, this is exactly what happened to the tree I found today. Whether to rot is co-incidental or not remains to be seen.

[David Humphries]

Yes, that is a lot of holes, but I would say pretty much any poplar in East Anglia will have some present.

 

I have anecdotal evidence that smaller trees affected by boring have failed due to white rot at the same level as the boring, this is exactly what happened to the tree I found today. Whether to rot is co-incidental or not remains to be seen.

 

 

 

Great shots Peter

 

now I'm in the area, I'll keep an eye out for pop failures & look for any decay/larvae associations.

 

 

Very interesting thread

 

 

 

.

[MattyF]

I recon 90% of pops I have looked at in 5 square miles have it rife.. The results as peters shown are pretty devastating!

[Tony Croft aka hamadryad]

i had no idea, i would expect the rotter is often pholiota squarsus, please let me know if you find this association.

 

just goes to show the power of "natural nieghbourhoods"

[Peter]

Its not far from your house David, I'll pm you the location if you want to go and look at it before someone tidies it all up.

 

Not heard of any larger trees failing interestingly enough, but that tree is the "smoking gun" I'v been looking for, so I'm very pleased.

 

It seems there is no research on stem failure related to boring damage, all the FC research relates to crown dieback. What I want to know is whether increased density of bore holes makes failure more likely, and if so at what point do you decide to remove?

 

What would be the best way to detect decay of that kind in a live tree?

[Peter]

When does pholotia fruit?