What type of wood do Wharf Borers infest?

Wharf Borers specifically target moist, rotting wood because their larvae require a damp environment for optimal growth and development. This type of wood provides the necessary conditions and nutrients for them to thrive. Wharf Borers are particularly drawn to wood that is exposed to marine conditions, such as pilings, docks, and other structures that are frequently in contact with water.

The nature of their infestation is closely tied to the state of deterioration of the wood; dry and hard wood lacks the moisture that these pests need, while sound untreated wood is typically in too good of condition to attract Wharf Borers. Additionally, painted or varnished wood creates a protective barrier that makes it less appealing for the larvae to penetrate and infest. Thus, the correct choice emphasizes the relationship between Wharf Borers and their requirement for a specific type of environmental condition, highlighting the importance of moisture content in wood for the survival of their larvae.