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 >Carpenter ant queen
Carpenter ant queen
Jeff Hahn, University of Minnesota Extension
Description: 1/2 - 5/8 inch long.
Where/When: Typically found singly outdoors and indoors from April to June.
Significance: This newly mated queen is searching for a site to start a nest and is not part of an established colony. It is just a nuisance when you find one in or around your home.
More information on Carpenter ants