Pine bark beetles?

[ruffdog]

Yeah those are definitely wood borers. They bore large holes in dead wood and you can hear them chomping. I’ve had them emerge from firewood in the house.

Up here, we get the red-headed ash borer that drills little round holes in our firewood.

 

[TractorGunn]

45 years ago I planted white pine every 10ft. along road for privacy. Just now (it's getting dark) I noticed one is dead. They're maybe 2ft. across (my #13 shoe). At the base is fine sawdust and I hear a chewing sound!!!!!
I assume it's pine bark beetles and all I can do is cut it down? Curious anything to do about other living trees?
View attachment 883978View attachment 883979

Adonis 2F Insecticide is supposed to work. I thought bayer tree and shrub would but they recommend this instead.

 

[jyoutz]

45 years ago I planted white pine every 10ft. along road for privacy. Just now (it's getting dark) I noticed one is dead. They're maybe 2ft. across (my #13 shoe). At the base is fine sawdust and I hear a chewing sound!!!!!
I assume it's pine bark beetles and all I can do is cut it down? Curious anything to do about other living trees?
View attachment 883978View attachment 883979

Do you have small holes with sawdust coming out and some holes oozing pitch? If so, they are a bark beetle of some species.

 

[jyoutz]

Up here, we get the red-headed ash borer that drills little round holes in our firewood.

Yep. There are lots of different wood borer species and many just work on one species of tree or just conifers.

 

[TractorGunn]

View attachment 884008View attachment 884009Thanks for getting me straight. This is the dude I was talking about. Really had some attitude to go along with the chompers. lol.

That doesn't look like a pine bark beetle, at least according to pics online.

 

[ruffdog]

Here, once the Canker is in a White Pine, it will die in time. If the Canker is on one branch, cut it and burn it. If it is on the main trunk, there is no hope. Also:

White Pine Blister Rust

 

[jyoutz]

Adonis 2F Insecticide is supposed to work. I thought bayer tree and shrub would but they recommend this instead.

The only effective insecticide to prevent pine beetle attack is Lindane. But it only prevents attack and the entire trunk needs to be sprayed. It’s not practical. There is no insecticide that is effective once the beetles are already under the bark.

 

[jyoutz]

Here, once the Canker is in a White Pine, it will die in time. If the Canker is on one branch, cut it and burn it. If it is on the main trunk, there is no hope. Also:

White Pine Blister Rust

White pine bluster rust will make a swollen orange canker on a limb or the trunk. Your advice is correct for blister rust also.

 

[oosik]

I will occasionally loose a tree or two to pine bark beetles. I cut the tree down and burn it. The cost of using chemical would be prohibitive.

My adult beetles do not look like what fixastuff shows - post#7. The adults here are as big as your thumb and shiny, dark mahogany color.

 

[Fixastuff]

That doesn't look like a pine bark beetle, at least according to pics online.

Yes I was wrong about what this creature was.