Home, Lawn & Garden Insects & Pests
In Tennessee, the invasion often starts around the third week in October. Multicolored Asian lady beetles, orange-red with a variable number of spots, often invade homes in the search of a protected overwintering spot. These beetles may congregate on the sunny sides of buildings by the thousands and, if given the opportunity, will often move inside. In Japan, they seek protected sites such as cracks and crevices in rocks on mountains. In the U.S., they use buildings as overwintering sites. This can be a particular problem in log homes because of their many cracks and crevices.
"SP503-C-Lady Beetles Infesting Homes," The University of Tennessee Agricultural Extension Service, SP503C-1M-7/02 (Rev.) E12-4615-00-006-03, http://trace.tennessee.edu/utk_agexdise/27