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The term woodboring beetle (Wood Borers) encompasses many species and families of beetles whose larval or adult forms eat and destroy wood (i.e., are xylophagous). Larval stages of some are commonly known as woodworms. Wood-boring beetle larvae feed on wood and wood products; adults emerge from larval feeding chambers through round, oblong, or D-shaped exit holes. Adults of some species also bore holes into plaster, plastic, and soft metals.
Depending on the species, wood-boring beetles can feed upon certain hardwoods or softwoods. Some hardwoods are naturally immune, if they have low starch content, or if the pore (vessel) diameters are too small for the female beetle’s ovipositor which prevents her from inserting eggs into the substrate.