Common auger beetle
Adult common auger beetles are small black/brown beetles about 2mm long and 1mm wide, with a rounded head. The end of the adult’s abdomen appears as if it has been sliced off. Adult beetles actively fly.
Damage: The adult stage of the common auger beetle is the damaging stage of this insect. It does not feed on healthy conductive tissue of the wood of vines, but bores to that depth.
Certain varieties of vines are more susceptible. Semillon is most susceptible.