Old House Borer

Adult body is black to brownish black; antennae are not longer than the body.


Development. Eggs are placed in cracks and crevices. Hatching occurs in about nine days, and first-stage larvae immediately bore into the wood. Larval development takes 2 to 10 years.

Full-grown larvae tunnel to the wood surface and cut oval exit holes. Adults live about 15 days.


Habits. Larvae feed on wood with moisture content of 10% to 20%. They do not feed on decayed wood. Infestations occur primarily in houses newer than 10 years old.

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