Lyctus brunneus explained

Lyctus brunneus is a xylophage (wood-eating) insect^[1] a species of beetle in the family Bostrichidae. It is a member of the subfamily Lyctinae, the powderpost beetles. It is known commonly as the brown powderpost beetle^[2] or brown lyctus beetle.

Today it is distributed worldwide but it was probably originally native to the Neotropical realm.^[3] Like other powderpost beetles, this species lives in wood.^[4]

Notes and References

1. https://www.animalwised.com/wood-eating-bugs-insects-that-eat-wood-3264.html Wood Eating Bugs - Insects That Eat Wood
2. http://www.padil.gov.au/pests-and-diseases/pest/main/135578 Lyctus brunneus.
3. Ebeling, W. Chapter 5: Wood-Destroying Insects and Fungi. Urban Entomology. UC Riverside Entomology.
4. http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7418.html Pest Notes: Wood-Boring Beetles in Homes.