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 > Longhorned borer, Sarosethes fulminans
Size: 3/4 - 1 inch long
Where/When: Most commonly found indoors during winter, but can be found at other times of the year.
Significance: Is associated with oak wood. Can be brought indoors in 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.