Walnut Twig Beatle (WTB)

[metalspinner]

With our local government finaly acknowledging that the Walnut Twig Beatle (WTB) is here and recent discussion about it on the forum, I began to question some of the logs I've picked up around town.  Walnuts are dying everywhere around our community and I wanted an idea of wether or not the log I was bringing home died from the beatle or some other source.
 
Often times, the branches and twigs of a log are long gone before I ever show up on sight, so is there a way to tell by examining the log if the tree secumed to the WTB?  Here is a nice link with pictures of WTB damage..

http://www.forestryimages.org/browse/subimages.cfm?sub=15382

I will study it deeper soon and thought you guys might want some reading material, too.

[Autocar]

I don't know much about it but I have heard it called walnut canker, is this the same thing ? Right now no walnut is suppose to come north of the Ohio river we have enough problems with the ash borer.

[Ironwood]

Just wanted to follow along,.....Ironwood

[metalspinner]

Aotocar,
As far as I understand it, the beetle carries a fungus into the wood of the tree and the fungus causes the canker.

[WDH]

That is a common beetle attack by-product for many species of tree.  The beetle is the vector, and the fungus that is riding along on the beetle is the killer.  Many times the tree can overcome the effect of the beetle boring in, but the tree is toast to the fungus that is along for the ride.

[Autocar]

Pretty complex creation we live in  ;)