Lyctus brunneus Click to enlarge image
Powder Post Borer, Lyctus brunneus Image: Andrew Donnelly
© Australian Museum

Fast Facts

  • Classification
    Species
    brunneus
    Genus
    Lyctus
    Subfamily
    Lyctinae
    Family
    Bostrichidae
    Super Family
    Bostrichoidea
    Suborder
    Polyphaga
    Order
    Coleoptera
    Class
    Insecta
    Subphylum
    Uniramia
    Phylum
    Arthopoda
    Kingdom
    Animalia
  • Size Range
    3 mm - 4 mm

Introduction

The Powder Post Borer is a member of the family Bostrichidae. It is a serious pest in Australia but is not an Australian native.

Habitat

The Powder Post Borer lives in urban areas.

Distribution

The Powder Post Borer is found throughout Australia.

Other behaviours and adaptations

Female Powder Post Borers lay eggs into hardwood timber and, on hatching, the grubs feed on the starch present in the wood. The larvae pupate into adult beetles, which then bore their way out of the wood.

Economic impacts

The Powder Post Borer leaves timber riddled with small holes approximately 2 mm in diameter, seriously affecting its strength. As a result, New South Wales legislation only allows a limited amount of susceptible types of wood to be used in building construction.