Lymexylidae

thumb|An adult Lymexylon navale The Lymexylidae (historically often spelled Lymexylonidae), also known as ship-timber beetles, are a family of wood-boring beetles. Lymexylidae belong to the suborder Polyphaga and are the sole member of the superfamily Lymexyloidea.

==Habitat and behavior== thumb|Example of an infested tree Lymexylon, Elateroides, and Melittomma are pests to forest trees such as chestnut, poplar, and oak, and can be found worldwide. Some species are parasitic, causing decay in living trees and damaging timber structures such as houses and ships. Wood boring activities occur primarily in the larva stage, with the larvae damaging both sapwood and heartwood. Lymexylidae larvae bore into living and decaying wood where they consume the fungus Alloascoidea hylecoeti.