Insects boring into tree

[DirtMechanic]

I have a golden raintree that is covered in sap balls. There is a little beetle type insect under each flow of sap. What is it and what method would be used to get to them under the sap? The only way I can think of is some systemic insecticide if such a thing exists, and that would take a long time to spread around. Should I even worry about it?

 

[Chuck]

I have a golden raintree that is covered in sap balls. There is a little beetle type insect under each flow of sap. What is it and what method would be used to get to them under the sap? The only way I can think of is some systemic insecticide if such a thing exists, and that would take a long time to spread around. Should I even worry about it?View attachment 54336View attachment 54337View attachment 54338

Sounds as if you have a serious problem. I think what you have are Shot Hole Borers. Google invasive shot hole borers and see if its not the same thing

 

[DirtMechanic]

The name sounds right from the perfectly round small hole.

I see no reason to think you are wrong. They eat oak too. Guess what tree is all around my house? It might explain a few quick and unexpected deaths. And guess what! They come with a fungus! Fusarium euwallacea.

I am fully pissed off. There will be a bio-war.

I contacted the county agent. Not an unknown problem here. Usually crops up in droughty conditions as we have now. The agent recommended a tree injecting arborist who will be here Monday.

Thanks @Chuck!