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Old House Borer

Actual Size:Approximately ยฝ – 1โ€ long

Characteristics: Black or dark brown coloring with a shield-shaped body

Legs: 6

Antennae:ย 2 long antennae

Wings: Two wings that allow them to fly, though they donโ€™t fly often

Habitat:ย Old house borers live in wood but emerge during the summer. They are capable of dispersing, but often choose to reinfest wood nearby

Habits:ย Old house borers lay their eggs in tiny cracks in wood. When the eggs hatch, the larvae burrow into the wood, causing extensive damage. The larvae develop into adult beetles, which emerge the following summer.


Old House Borer Beetles in Suffolk County & Nassau County

Old house borers, as their name suggests, burrow or โ€œboreโ€ into houses. Or actually, their larvae do. Theyโ€™re a type of long-horned beetle, which is characterized by their long antennae. Adult beetles emerge from wood when the weather is warm. While they can fly, if they can find a suitable place to lay eggs nearby, they will most likely do so.

Old House Borer Beetle Habitat

Old house borer beetles spend much of their lives in wood. Preferring softwoods to hardwoods and wood thatโ€™s ten years old or less, each female lays about 50-200 eggs, which hatch in a matter of weeks and begin boring further in. It takes about three to six years on average for the larvae to fully develop and emerge.

Evidence of old house borer beetles can be seen in the small oval holes they make in wood, approximately โ…“ – โ…œโ€ across.

Old House Borer Beetle Behaviors, Threats, or Dangers

As is common in the insect world, the larvae of house boring beetles cause the most damage. Adults themselves are rarely seen. Contrary to their name, they preferย newย houses as newer wood contains a protein they seek, and most infestations occur in homes that are ten years old or less. While they can inflict costly damage on your home, theyโ€™re not common.

Because theyโ€™re uncommon, it can be difficult to identify a house boring beetle infestation. A professional exterminator can apply treatment for old house borers that works well.