Bug Identifier
Powderpost Beetle
Community identification

Powderpost Beetle

Lyctus brunneus

Order & Family
Coleoptera: Bostrichidae (formerly Lyctidae)
Size
2 mm to 7 mm (1/12 to 1/4 inch)
See this bug in the Encyclopedia

Natural Habitat

Dry wood, hardwood timber, wooden furniture, and structural lumber with high starch content.

Diet & Feeding

Larvae feed on the starch within hardwoods such as oak, ash, walnut, and hickory, boring tunnels as they grow.

Behavior Patterns

They are nocturnal and attracted to light. Females lay eggs in the pores of wood, and the developing larvae can spend months or years eating wood from the inside before emerging as adults.

Risks & Benefits

A significant structural pest that can reduce solid wood to a fine, flour-like powder. They pose no direct health risk to humans but can cause severe damage to homes and antique furniture.