With the woodworm is meant the larva

The two major stages of development in the life of the woodworm are the larva and egg laying after hatching. This combination provides an almost infinite cycle, during which the voracious larvae continue to hollow out the wood. In order to get rid of them, the larvae must be killed and the beetles driven out.

Life cycle of larva and insect

The larvae of the woodworm arise from the eggs, the newly hatched female common weevil after fertilization directly put back in the wood. The life of the larvae varies depending on the environment between one and eight years. On average, they pupate after two to three years. Until then, the larvae have eaten by several growth spurts.

From the pupae, the beetle hatches after two to three weeks as an insect and uses the excursion channels, which were eaten by larvae in the wood to find a Befruchtungspartner. Subsequently, the female lays about thirty eggs with a diameter of about half a millimeter in diameter. The resulting new larvae of about six millimeters in length preferably remain at their birthplace and continue their destructive work.

Preferred living conditions

Especially in cool buildings and rooms with humid air, the larvae of woodworm feel comfortable. In normal and regularly heated environments they are deprived of their livelihood.

  • Moisture 25 to 30 percent
  • Soft spring and sapwood
  • No heartwood of Douglas fir, oak, pine and larch
  • Wood dryness below 15 percent sells the woodworm

Properties and behavior of the larva

Whether a woodworm is active or not can be determined almost only after the hatching of larvae become beetles. When leaving the wood, the wood flour falls out of the feeding channels. Therefore, an observation on active or past infestation must always take place over a longer period of time (one to four weeks).

The outputs of the round feeding passages with a diameter of between one and two millimeters only insufficiently explain the intensity of the infestation inside the wood. This also results in the possibility of acoustic location. The sounds of the woodworm are caused by eating the larvae. In thick and deep wood, these sounds do not penetrate safely to the outside.

Measures to expel and kill the larvae

The larvae consist mainly of protein, which degenerates from a temperature of 55 degrees Celsius. This feature allows you to fight with heat. To remove the woodworm, biological and physical and chemical methods and means can be used.

Some relatively simple measures and remedies prevent and prevent fresh infestations. The following factors are not appreciated by the larvae:

  • Heated rooms with dry air
  • heartwood
  • Intense odors of sorrel, vinegar, garlic, cedar
  • Unrest and loud noises on and on the wood

Tips & Tricks

Observe building laws and regulations regarding pest infestation and static. In most cases, you need to have a wood preservation report prepared. Claims to the wood protection and the professional combat are defined in the standard DIN 68800.

Product Image: Perutskyi Petro / Shutterstock

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