To develop and reach maturity woodboring beetles need nutrients provided by fungi from outside of the inhabited wood.
[6] Though the vast majority of woodboring beetles are ecologically important and economically benign, some species can become economic pests by attacking relatively healthy trees (e.g. Asian longhorn beetle, emerald ash borer) or by infesting downed trees in lumber yards.
Woodboring beetles are commonly detected a few years after new construction.
[citation needed] Genuine infestations are far more likely in areas with high humidity, such as poorly ventilated crawl spaces.
Some beetles invade wood used in construction and furniture making; others limit their activity to forests or roots of living trees.