Before I burn these logs... What are these?

[Mattjohndeere2]

Hello all, got some bad bugs in some blue spruce logs. Anyone have ideas on what they might be? See pictures and videos below. Videos are through Google photos so hopefully you can view them.



 

( admin edit,  offsite photo links not allowed)

[Old Greenhorn]

Spruce Beetles?

[SwampDonkey]

I get sawyer beetles and lots of tiny ambrosia-like bark beetles up here in cut spruce. Adult sawyers are large with long antenna, larva make large round holes. The bark beetles really make some sawdust piles and pin holes. You'd think you had some piles of cinnamon. I've got some spruce I cut 2 weeks ago and stacked for firewood under the porch. Every once in awhile I mash a large adult sawyer. :D

[Mattjohndeere2]

Copy that. I want to say the closest I can figure is they are old house borer beetles. Holes are oval shaped, probably a 1/4 to 3/8 inches sized, and frass is mostly little pellet looking stuff. I did see a larvae trying to poke its head out of one of the holes. 

I have lots of ambrosia beetles but they don't bother me much, once the wood is dry they don't touch it. These are a different story and I'd hate to have them in the timbers of the house.

[SwampDonkey]

Oval holes are buprestid beetle larvae. The adults have metallic colors, like golden and emerald.

[Mattjohndeere2]

Ok. I did see some metallic green bugs so prolly the adults.

Think I should cut my losses and burn these logs? Just don't want them around for when I get to sawing my other timbers for the house (trees still standing in the woods). These were supposed to be for 4x10 timber joists but I can use hemlock for that instead.

[serg]

Hello friends! Peace, friendship, and a beautiful life to all! 
I periodically come to your forum and I really like to communicate with you! This post is about a log affected by beetles, insects, bark beetles, fungus and mold. I will share my experience of how I give a second life to an infected spruce and pine log. I made a stainless steel oven 100% sealed without air access. They reach a temperature of 329 Fahrenheit. Exposure time is 12 hours. I open the camera at a temperature of 104 degrees Fahrenheit. At this temperature, it kills all insects, spores of the fungus. The shrinkage of the log in diameter is up to 10 centimeters. The hardness increases, it is well polished, polished. We have a lot of forests affected by bark beetles, the problem with disposal is when you make goods from cheap raw materials, you get beautiful houses, the profit increases several times. It is not necessary to burn the affected logs in the fire, you can give him a second life for many ten years. 
The Wood Meiser sawmill saws the carriage, the second frame with a milling cutter gives the shape of a lunar groove external and internal, and a "Norwegian castle" is being made to build a house from such a log. I also make a log out of a clean log.
Best regards Sergey.

[Mattjohndeere2]

That's pretty interesting. What is your heat source for the kiln?

I have a kiln half built. It crossed my mind to finish it and try full logs but figured that would do more damage than good to the wood.

[123maxbars]

interesting kiln you have, thanks for sharing, I would like to hear/see more, 

[petefrom bearswamp]

Spruce seems especially vulnerable to these beetles

[serg]

Hello friends! 
I have done a lot of experiments with the design and drying schedule. In 2000, I opened a book publishing house in 1932. The book is based on the American experience of drying wood. The great American experts in this field are Koller and Talent. The Kiln drying of lumber". It describes a drying method with natural air circulation. I did it in practice. Now everyone is working with fans and humidification. After I learned how to dry the wood qualitatively to a humidity of 6%, I carried out the first thermo modification of the tree. Thermia B and Mobile 605 coolant. Electric boilers installation capacity from 9 kW to 36 kW. Secondary raw materials after heat treatment gives a unique beauty created by nature. I refine it with resin, oil - wax, varnish. Watch a small format video.
 With the best wishes Sergey.

https://youtu.be/46cPo9v94gE