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Inspection FAQs

Lyctus Beetle (Powderpost)

Powderpost beetles attack dry wood and continue their attack, until the sapwood is destroyed. The female beetle lays her eggs in tiny end pores of the susceptible sapwood of many hardwoods that contain starch. Pines do not contain pores and are therefore not attacked. Some hardwoods do not contain starch in the sapwood and are also resistant to attack.

Powderpost beetles mostly attack during the first 6 to 12 months of the service life of timber. As only sapwood is destroyed, large-dimensional timbers in a house are seldom weakened significantly to collapse. In small dimensional timbers, the sapwood may be extensive, and its destruction may result in collapse. In flooring and joinery, the use of sapwood susceptible to powderpost beetles is an offence in Queensland. Replacement of affected timbers is the preferred treatment.

The female lays her eggs only in the exposed end pores. In pines these are too small to accommodate the eggs and are therefore immune to attack. The larvae that hatch from the eggs feed on starch in the sapwood. After several moults, the larvae are fully grown and then come close the wood’s surface to pupate. Powderpost beetle larvae are identifiable by the presence of enlarged spiracles on the last segment of their abdomens. The beetles then emerge about 20 days later through round holes. The dust ejected from the flight holes is fine and flourlike. The heartwood does not contain starch and is immune to attack. Beetles live about 3 to 6 weeks, mate and lay eggs in the end pores of hardwoods. Generally, the life cycle lasts 4-12 months but depends on many factors. They fly readily and spread rapidly to other susceptible timbers.

  • Pine timbers are not attacked by powderpost beetle
  • Powderpost beetle attack occurs only in the sapwood of some hardwoods
  • heartwood is not susceptible
  • Hardwoods (non-pine timbers) must contain starch in the sapwood to be susceptible
  • Powderpost beetles are about 3mm – 4mm long
  • 2 segmented clubbed antennae
  • Head visible when viewed from above

Powder Post Beetle

 Lyctus sp.

  • Curled larva with 3 prs.thoracic legs

2 enlarged spiracles on 2nd last abdominal segment

Powder Post Beetle Frass & Larva

 Lyctus  & Anobiid frass comparison

Powderpost Beetle

ABIS building and pest inspections are conducted to the highest standard by building inspectors with a minimum of 10 years experience together with the highest professional qualifications in their field. ABIS has been in business over 27 years conducting both building and timber pest inspections.

Our highly recommended home inspectors are all long term trusted employees not here today gone tomorrow sub-contractors. ABIS Inspectors are supported by a unique computer aided inspection system and the latest inspection equipment such as high sensitivity thermal cameras costing thousands of dollars that others don’t often have.

When you book a pre-purchase inspection with ABIS, our friendly local (they know the area and are not in a interstate or overseas call centre) staff will make the whole process easy for you. Our Office team make all the arrangements with you, your agent, the vendor, the tenant (if there is one) and you will be sent an email to confirm the inspection time along with a pre-engagement letter which covers the scope of the inspection. Good communication and local knowledge are key to you getting the most out of your building and pest inspection. We are always happy to answer all your questions and you are most welcome to be on site when we do the inspection. Our technology, systems and processes also mean you get your high quality report shortly after your inspection is completed.

And all this for an incredible low price.

Service Areas

Area Map The Peninsula Moreton Bay Area East Brisbane Redland Bay Area Gold Coast Ipswich Brisbane West Brisbane Northside Brisbane Southside Logan City

ABIS The 1st Choice in Building & Pest Inspections