Woodworm Lifecycle

17 March 2008

The Stages of the Woodworm Lifecycle

For the purpose of this explanation we have made the assumption that the beetle that lands on the timber is a pregnant female:Woodworm Lifecycle

Woodworm laying the eggs

1. The female beetle starts the woodworm life cycle process by laying her eggs directly into the timber through cracks, crevices and existing flight holes. To protect the eggs they are not left on the surface of the timber.

Hatching of the eggs- The Start of the Infestation

2. After a few weeks, the eggs hatch downwards into the timber and produce larvae – this is the worm stage of the infestation.

Woodworm Causes Structural damage

3. The worm, or larval stage, carries on for anywhere between 2 and 5 years. In that time, the larvae eats its way up and down the timbers and causes the structural damage to the timber. It is at this stage in the life cycle that the frass, or dust, that is associated with woodworm is produced.

Woodworm turns into Beetle

4. Towards the end of its lifecycle, it forms a pupal chamber where it enlarges the tunneling towards the surface of the timber and pupates from the larval stage into an adult wood worm beetle. The adult beetle then eats its way through the last thin veneer of timber producing the round exit holes that you normally see. From here on in the beetle causes very little further damage to the timber.

It is the round exit holes that normally identify timber that has been subjected to beetle infestation. The females live for between 10 and 14 days whereas their male counterparts only live between 3 and 4 days. Once the adult male beetles have emerged from the chamber there sole purpose is to mate with as many female partners in their short lifespan and the lifecycle continues.

Overview of the Woodworm Lifecycle

A photographic representation of the lifecycle of woodworm can be seen on the right of this page. In the first image, the beetle’s eggs can be seen placed in the end grain of the timber. The second image illustrates the larvae or worm stage of the lifecycle, followed by the pupal chamber showing pupating larvae. And finally in the bottom image, the adult Common Furniture Beetle can be seen. As the name suggest this beetle is the most common in the UK and can be identified by its distinguishing features such as its “hooded pro-thorax”.

Request a survey online

Got Woodworm? Call 0800 288 8660 to arrange a survey or

Need help with your woodworm problem?

If you have any questions about treating woodworm, feel free to chat to one of our property care team who are delighted to help you further. Call us on 0800 288 8660 or simply on the ‘let’s chat’ button to chat to Timberwise and we’ll be happy to help with your property care problem.