Wikipedia
Lymexylidae
The Lymexylidae, or ship-timber beetles, are a family of wood-boring beetles, and the sole member of the superfamily Lymexyloidea.
They are 5 to 40 mm long. The larvae bore into living and decaying wood (chestnut, poplar, and oaks) where they eat the fungi that grow in their tunnels. Lymexylidae, a wood-boring beetle, possibly first beetles to evolve agriculture. They are fungus farmers of Endomyces hylecoeti and Ascoides spp.