Environ. Horticulture, Pears, Cherries, and Viticulture
University of California
Environ. Horticulture, Pears, Cherries, and Viticulture

Overwintering in Homes

BMSB can find their way into homes and other buildings through small openings. Adults overwinter in cracks indoors and outdoors including behind downspouts attached to the edge of homes. They can also be found on large trees under the bark.

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BMSB on a house in Pennsylvania in late summer (photo by Tracy Leskey).
BMSB on a house in Pennsylvania in late summer (photo by Tracy Leskey).
BMSB aggregation under eave, Oct. 2014 (photo by Wendy Motooka).
BMSB aggregation under eave, Oct. 2014 (photo by Wendy Motooka).
BMSB adult on screen (photo by Becki Bell).
BMSB adult on screen (photo by Becki Bell).
BMSB entry into homes may occur through older windows and window air conditioners (photo by Chuck Ingles).
BMSB entry into homes may occur through older windows and window air conditioners (photo by Chuck Ingles).
Any opening to a home should be sealed (photo by Chuck Ingels).
Any opening to a home should be sealed (photo by Chuck Ingels).
Aggregation seen on Chinese pistache tree, Sept. 2013 (photo by Baldo Villegas).
Aggregation seen on Chinese pistache tree, Sept. 2013 (photo by Baldo Villegas).
In winter, BMSB adults can be found on large trees under bark--bark piece removed (photo by Chuck Ingels).
In winter, BMSB adults can be found on large trees under bark--bark piece removed (photo by Chuck Ingels).
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