Oligomerus

Adults leave round exit holes 1–3 mm in diameter when emerging from wood. Boreholes contain loose, powdery frass (bore dust), which distinguishes them from some other wood-boring beetles that produce compacted or pellet-like frass.

Associated with timber and wooden materials; larvae develop within wood.

Documented from Norway and Sweden; broader European distribution likely given genus establishment and species diversity.

Larvae feed on wood; specific host preferences by species are not well documented.

Complete metamorphosis with wood-boring larval stage; adults emerge through round exit holes.

Larvae tunnel within wood, creating galleries; adults emerge and leave characteristic exit holes.

Decomposers of dead wood; contribute to nutrient cycling in forest ecosystems and may affect wooden structures.

Considered pests of timber and wooden structures due to larval wood-boring activity; exit holes and frass are indicators of infestation.

• XestobiumAlso a death-watch beetle genus in Ptinidae; distinguished by Oligomerus's smaller exit holes (1–3 mm) and loose frass.
• AnobiumRelated wood-boring genus; Oligomerus exit holes are smaller and frass consistency differs.

• wood-boring
• pest
• timber
• Coleoptera
• Ptinidae
• Europe

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life