Extension > Garden > Diagnose a problem > What insect is this? > Insects found indoors > Beetles, bugs, ants, and other insects without obvious wings - Larger than 1/4 up to 1/2 inch long > Ground beetle, Pterostichus sp.
Size: 7/16 inch long
Where/When: Found throughout homes during spring and summer, particularly in August.
Significance: Does not harm people or property, although it can be a nuisance.