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Happenings in the insect world
Comments:
by Myra
on October 29, 2013 at 9:30 AM
How do ladybugs get into my highrise? I live on the 25th floor of a glass and stucco condo building and frequently have ladybugs crawling on my windows. How and why do they get up this high?
by Kathy Keatley Garvey
on October 29, 2013 at 2:04 PM
A reader inquired: "How do ladybugs get into my high rise? I live on the 25th floor of a glass and stucco condo building and frequently have ladybugs crawling on my windows. How and why do they get up this high?"  
Answer from Lynn Kimsey, director of the Bohart Museum of Entomology and professor of entomology at the University of California, Davis: "This time of year (October 2013) ladybugs are flying to places where they can overwinter in groups. They normally go to natural sites but will also aggregate on or in homes or other buildings both near ground level and higher. They would remain in place until spring when they warm up enough to fly and return to the regions they came from to feed on aphids and produce the next generation."  
As an aside, no information on where the reader lives. "Because what they might be seeing are Asian lady bugs as opposed to our native ones," Kimsey says. "The Asian species was introduced to control walnut aphid but like to aggregate in and on homes and other buildings."  
 
 
 
Lynn
 
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