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Text © K. Reißmann, T. Hörren, M. Stern, F. Bötzl and C. Benisch

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Hylotrupes bajulus (L., 1758)
Hylotrupes bajulus
Hylotrupes bajulus A
Hylotrupes bajulus B
Hylotrupes bajulus C
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The 7 to 21 mm large old house borer Hylotrupes bajulus (family Cerambycidae) Is the only representative of the genus worldwide. Originally of palearctic distribution, Hylotrupes bajulus is meanwhile found also in North America, South Africa, Asia and Australia. The species develops in coniferous sapwood, mainly construction lumber in roof structures. Contrary to the death watch beetles the larvae don't expel wood dust from their burrows and the infestation often goes unnoticed. Depending on temperature, moisture and nutrition content, the larval development takes 4 to 10 years. The lower the nutrition content, the higher is the amount of wood consumed by the larva and they cause much damage in a short period of time. Therefore an infestation is reportable in some Federal States. In Germany, the species is everywhere present and is not endangered. (CB)

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