Identifying WoodwormTimber attackedDamage:Signs
Common Furniture Beetle

Common Furniture Beetle

(Anobium Punctatum)

  • Sapwood of soft and hard timbers and older plywood
  • Modern plywood and tropical hardwoods are generally immune
  • Severe, extensive tunnelling that generally follows the grain of the timber
  • Treatable
  • Lots of gritty, uniformly-coloured dust that can be easily knocked from the timber
  • Round tunnels generally running with the grain
  • Round flight holes on the timber’s surface of approximately 1-2mm diameter
Death Watch Beetle

Death Watch Beetle

(Xestobium Rufovillosum)

  • Hardwoods like oak or elm with some degree of physical decay
  • Softwoods where significant decay is present and when it is located close to the aforementioned hardwoods
  • Severe, extensive tunnelling that is more evident internally
  • Treatable
  • Large and gritty pellets of dust (frass) of a uniform colour
  • Round tunnels with a lot of dust
  • Round flight holes on timber’s surface of approximately 3mm diameter
Woodboring Weevils

Wood-boring Weevils

(Pentarthrum Huttoni Euophryum Confine)

  • Well decayed, aged hardwoods and softwoods
  • Tunnelling with the grain of the timber due to larvae and adult beetle activity
  • Tunnels frequently break the surface of the timber
  • Lots of gritty, uniformly-coloured dust that can be easily knocked from the timber
  • Round tunnels generally running with the grain and breaking the surface
  • Round, jagged flight holes on timber’s surface of approximately 1mm diameter
Powder Post Beetle

(Lyctus Brunneus)

  • Sapwood of wide-pored hardwoods like oak with high starch levels
  • Obeche core in plywood
  • Timber over 10 years old achieve immunity due to starch depletion of the natural ageing process
  • Severe tunnelling in the sapwood, with the grain in the early stages
  • Sapwood may be totally disintegrated with only a thin, sound surface to timber
  • Treatable
  • A smooth, flour-like dust that can be easily knocked from the timber
  • Round tunnels which frequently intersect, often following the grain in early stages
  • Round flight holes on timber’s surface of approximately 1-2mm diameter
House Longhorn Beetle

(Hylotrupes Bajulus)

  • The sapwood of softwoods
  • Severe tunnelling that often coalesces
  • Sapwood may be totally destroyed leaving a thin veneer surface that may appear corrugated
  • The tunnel is full of frass and often exhibits fine ridges
  • Treatable
  • Sausage-shaped pellets (frass) readily visible to the naked eye and easily shaken from the timber
  • Large, oval-shaped tunnels that often coalesce
  • Oval, jagged flight holes on timber’s surface of approximately 6-10mm diameter
Wharf Borer

(Nacerdes Melanura)

  • Severely decayed, aged hardwoods and softwoods
  • Softwood is reported to be preferred
  • Severe tunnelling in rotted wood
  • The tunnel is full of mud-like frass and coarse fibres
  • Tunnels generally follow the grain of the timber
  • Mud-like frass with clutches of coarse fibre
  • Large, oval-shaped tunnels that often coalesce
  • Oval, jagged flight holes on timber’s surface of approximately 6-7mm diameter
Bark (Waney Edge) Borer

(Ernobius Mollis)

  • Seasoned and partly seasoned timber with bark present
  • The presence of bark is required to initiate an attack
  • Surface scoring to outer sapwood, some holes present
  • Most damage is present in the bark
  • Gritty, round-shaped pellets of a uniform colour
  • Round tunnels mainly in the bark
  • Round flight holes of approximately 2mm diameter
Wood Wasp

(Urocerus Gigas)

  • Softwoods of newly felled logs and unhealthy trees
  • This forest insect will not attack seasoned wood
  • Discrete tunnels with hard-packed fibrous frass
  • A coarse, fibrous frass which is hard to remove from tunnels
  • Large, round, smooth-edged tunnels of good separation
  • Round flight holes of approximately 6-7mm diameter
Fan Bearing Wood Borer

Fan Bearing Wood Borer

(Ptilinus Pectinicornis)

 

  • The sapwood of certain European hardwoods like oak
  • It is rarely found in furniture
  • Severe tunnelling in the sapwood, going with the grain in early stages. Similar to Powder Post Beetle but frass is extremely hard packed
  • Sapwood may be totally disintegrated with only a thin, sound surface to the timber
  • A smooth, flour-like dust that cannot be knocked from the timber and requires digging out
  • Round tunnels full of hard frass
  • Round flight holes on timber surface of approximately 2mm diameter
Pinhole Borers

(There are numerous types of Ambrosia Beetle)

  • Newly felled logs of hardwoods and softwoods
  • This forest insect will not attack seasoned wood
  • Tunnelling due to female adult activity is found across the grain
  • Blue or black staining to tunnel wall
  • No frass
  • Round tunnels of varying size
  • Round, black-stained entry holes that vary in size
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