Powderpost BeetlePowderpost beetles are a group of seventy species of woodboring beetlesclassified in the insect subfamily Lyctinae.[1] These beetles, along with spider beetles, death watch beetles, common furniture beetles, skin beetles, and others, make up the superfamily Bostrichoidea. While most woodborers have a large prothorax, powderpost beetles do not, making their heads more visible. In addition to this, their antennae have two-jointed clubs. They are considered pests and attack deciduous trees, over time reducing the wood to a powdery dust. The damage caused by longhorn beetles (family Cerambycidae) is often confused with that of powderpost beetles, but the two groups are unrelated. Their larvae are white and C-shaped.

Powderpost beetle larvae spend months or years inside wood while developing, feeding mainly on the starch content. Their presence is only apparent when they emerge as adults, leaving behind pinhole-sized openings, often called “shot holes”.[2] They may also leave piles of powdery frass below. Shot holes normally range in diameter from 132 inch (0.79 mm) to 18 inch (3.2 mm), depending on the species of beetle. If wood conditions are right, female beetles may lay their eggs and re-infest the wood, continuing the cycle for generations.

If you have a powderpost beetle problem, don’t hesitate to call Brooks Pest Control today at 423-562-1094! We’ll help to eliminate unwanted pests in and around your home.