
Lyctid Powderpost Beetle Identification Guide
Quick Facts About Lyctid Powderpost Beetles
Lyctid powderpost beetles are wood-boring insects that can damage wooden structures in Tennessee homes. Though they may not cause property damage to the extent that termites do, these beetles can ruin the appearance of wooden furniture and potentially compromise your home’s structural integrity.- Size: 1/16 to 1/4 inches long
- Color: Reddish-brown to black
- Shape: Slender, elongated body
- Active Season: Year-round in indoor environments
- Lifespan: Complete lifecycle takes 3-12 months
- Reproduction Rate: Females lay eggs in pores and cracks of unfinished wood

What Do Lyctid Powderpost Beetles Look Like?
Lyctid powderpost beetles are small, slender insects with reddish-brown to black coloration. Their small size makes them difficult to spot directly, and they’re often only detected once damage has occurred. Adult beetles emerge from infested wood, leaving behind distinctive exit holes and fine, powdery frass (excrement mixed with wood particles).Key Identifying Features
- Small, slender body measuring 1/16 to 1/4 inches in length
- Reddish-brown to black coloration
- Narrow body with an elongated appearance
- Visible antennae with distinctive club-like ends
- Fine, flour-like powder (frass) beneath exit holes in wood—a distinguishing feature of “true” powderpost beetles
Related Species
Lyctid powderpost beetles are often confused with other wood-boring insects, particularly bostrichid powderpost beetles (false powderpost beetles). The key difference is that lyctids produce a very fine, flour-like powder beneath their exit holes, while bostrichids do not leave visible powder accumulations. Additionally, lyctids primarily attack hardwoods (oak, ash, hickory) with high starch content, whereas other wood-boring beetles may infest both hardwoods and softwoods.
Property Damage Risks
These beetles can cause significant damage to wooden structures in your home.
- Visible pinhole-sized exit holes (1/32 to 1/16 inch in diameter) in wooden surfaces
- Fine, flour-like powder beneath or around infested wood
- Weakening of structural wood components if infestation is severe and long-lasting
- Aesthetic damage to hardwood flooring, furniture, cabinetry, and trim
Where to Look for Lyctid Powderpost Beetles in Your Home
Lyctid powderpost beetles primarily infest hardwoods with high starch content. Inspect baseboards, wooden beams, hardwood flooring, furniture, cabinetry, and other wooden items for tiny pinhole-sized exit holes (1/32 to 1/16 inch in diameter). Look for accumulations of fine, flour-like powder beneath or around these holes—this is a telltale sign of lyctid activity. Pay special attention to newer, unfinished wood products and recently purchased wooden furniture, as these beetles cannot penetrate finished or painted surfaces to lay eggs.When to Call Professional Help
Professional intervention becomes necessary when you notice signs of lyctid powderpost beetle activity, including:- Discovery of small, round exit holes in wooden structures or furniture
- Presence of fine, flour-like powder beneath wooden items
- New damage appearing in previously intact wooden elements
- Recent purchase of secondhand wooden furniture showing signs of infestation