Larva in old wood

[Bonsaiforest]

Was in the process of cleaning up an old wound and this guy was wriggling around in some dead wood of my trident. Not sure what it is but he's about an inch long. It was in a soft spongee section of dead wood. Scratched back to hard wood and didn't find any more. Question is ...is there anything that I can treat the area with just in case there are more and also to preserve/harden dead wood
I eventually want the callous tissue to grow over, I'd like there to be a smoother finish when callous grows over so was wondering if there are any products/fillers that can be safely used on bonsai's that wont affect the health of the tree

[Webos]

I have problems with these things every year and still don't have a good solution. I do know that they eat away at dead wood and I've had them open up some Shari's very nicely for me. I've also had them go too far on a prunus of mine and pretty much ruin the tree. If anyone else has any good ideas, please let us know!

Adam

[Piscineidiot]

That one's already hit the pupa stage. Could be either a beetle or a wasp, but it's difficult to tell without seeing the pupa in person, or having high resolution photos from different angles. How big was it?

[JaseH]

I eventually want the callous tissue to grow over, I'd like there to be a smoother finish when callous grows over so was wondering if there are any products/fillers that can be safely used on bonsai's that wont affect the health of the tree

I have seen a few instances where cavities in maples which they want to heal over have been filled with type of cement(there is a bit about it here on Peter Teas blog):

https://peterteabonsai.wordpress.com/20 ... ent-maple/

I know the Japanese do it too and they generally know what they're doing, so I assume it must work?

[Bonsaiforest]

Pupa is about an inch long. And back to filling of the deep wound for callous tissue to grow over- think ill try to source a timber filler that's waterproof and sets hard. hopefully I can find one suitable with a low chemical base.