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.
Outdoors, Asian lady beetles helpfully feed on plant pests like aphids and many others. From September to November, they move indoors to overwinter, crawling along windows and walls. Small cracks around windows and door frames provide entry points.
The occasional ladybug is nothing to worry about. Most complaints of ladybug infestations are caused by the Asian lady beetle, which was introduced into many regions of the U. These beetles would normally hibernate for the winter inside of caves and rocky crevices.
Multicolored Asian lady beetle, Harmonia axyridis Pallas is also known as Asian lady beetle, Halloween lady beetle, and Japanese lady beetle. Larvae are blue to black with two orange stripes, and rows of small, spines on their bodies. Multicolored Asian lady beetles can be a nuisance when they occur in large numbers inside homes. Asian lady beetles are common in wooded areas, agriculture fields and home gardens.
The multicolored Asian lady beetle is a common pest throughout Ontario, and other parts of Canada. But not all ladybugs are created equal, especially when there are around 5, ladybug beetle species worldwide. The Asian ladybug is aggressive and a nuisance in late fall, winter and spring.
Skip to content Skip to navigation. A native of eastern Asia, the multicolored Asian lady beetle, Harmonia axyridi s, was introduced into the United States by the U. Department of Agriculture as a biological control agent.
Large numbers of lady beetles ladybugs infesting homes and buildings in the United States were first reported in the early s. Ladybugs normally are considered beneficial since they live outdoors and feed on plant pests. Once inside they crawl about on windows, walls, attics, etc.
Alpine WSG Insecticide. Lady bugs surrounding and invading your home by the thousands? It's not lady bugs, it probably the Multi-Colored Asian Lady beetle. The Multi-colored Asian lady beetle Harmonia axyridis are sometimes mistaken for ladybugs or lady bird beetles, and are familiar insects in many parts of the United States.
Please be sure to read the product label of any insecticide you choose to use to get information on the personal protective safety gear you will need. In most situations, it is recommended that you wear long pants, a long sleeved shirt, closed toe shoes with socks, chemical resistant gloves, and goggles. In areas where ventilation is poor, a manufacturer may recommend you wear a mask or a respirator.
They may be a nuisance, but these tiny insects are beneficial. Although it does appear that your wall is shifting, that is simply an inordinate number of Asian lady beetles congregating for shared shelter. While a nuisance, these beetles do not carry diseases harmful to humans, they do not reproduce indoors, and they do not feed on wood or clothing. Read on for some interesting facts about the Asian lady beetles.