Balsam bark borer, Tomicus balsameus Lec. 



1 Advanced stao;e of work in bark 



2 A small gallery in bark 



3 Portion of galleries in wood, showing the same borings as represented 



in i 



4 Portion of wood from which the outer bark has been removed, showing 



very badly riddled, probably decaying tissues 



5 Wood rather badly carved by adult galleries 



7 8 4 



