Extension > Garden > Diagnose a problem > What insect is this? > Insects found indoors > Beetles, bugs, ants, and other insects without obvious wings - Larger than 1/2 inch long > Locust borer

Locust borer

Jeff Hahn, University of Minnesota Extension

Description: 3/4 inch long.

Where/When: Most commonly found indoors during winter, although can be found at other times of the year.

Significance: Is associated with black locust wood. Can be brought indoors with firewood or lumber in construction projects. Is harmless to people. Can cause cosmetic damage to wood from which it emerges, but fortunately it does not re-infest wood.

More information on Locust borers