Koch and W. Hutchison Department of Entomology, University of Minnesota. It has been debated whether MALB arrived in the United States through intentional releases for biological control or through accidental seaport introductions. MALB was first detected in Minnesota in
Multicolored Asian Lady Beetle
Asian Beetles - How To Kill and Get Rid Of Asian Beetles Bugs
Asian Lady Beetle. A native of Asia, this beneficial ladybug was imported in the early 's to help naturally control pest populations that were damaging such crops as alfalfa, pecan and citrus trees. The beneficial aspects of this ladybug have been quite useful in reducing the need for pesticides and have relieved the hardwood forests of many disease carrying aphids, mites and scale insects. They are small, hemispherical in shape, and can be found with and without spots.
The multicolored Asian lady beetle Harmonia axyridis Pallas was introduced from Asia both purposefully for classical biological control of arthropod pests and accidently into the United States many times during the twentieth century. It finally became established and quickly spread over the entire United States sometime in the late 's and early 's. By , Harmonia axyridis had colonized the United States from Florida to Canada and from coast to coast.
Multicolored Asian lady beetle showing color variations. Where to find it while inspecting: When gathering in fall, they will be found in large numbers on the sunny side of buildings and trees. Any available access to protected habitat may encourage large numbers to enter for overwintering. Look for gaps and holes in structure, most notably around eaves, windows and foundations again, often on the south side of the building. Colors vary as does spotting.