[Swindinian]

In the third photo, the profile looks like a weevil?

Like other beetles, they would have a larval stage, so perhaps there are wood boring larvae in the branch?

 

[Swindinian]

Suspect they aren’t harmful to the boa, but if you see saw dust as well, then they could be slowly chomping down the bark.

Ask advice from the shop, if you think they introduced it. Could try baking or soaking the branch to eliminate unwanted bugs.

inclined to just spray and then hand pick them off, if they are already in there.