Adults : Adults are active from early summer to mid-fall. They feed on the bark of twigs periodically throughout the mating and egg-laying period. On sunny days, the adult beetles are most active from mid-morning to early-afternoon.
Ladybugs go by several other names: lady beetles, ladybug beetles, and ladybird beetles. Regardless of what you call them, these beetles belong to the family Coccinellidae. All ladybugs progress through a four-stage life cycle known as complete metamorphosis.
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.
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.
Harmonia axyridismost commonly known as the harlequinmulticolored Asianor simply Asian ladybeetleis a large coccinellid beetle. This is one of the most variable species in the world, with an exceptionally wide range of color forms. It is now common, well known, and spreading in those regions, and has also established in Africa and widely across South America.
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. ByHarmonia axyridis had colonized the United States from Florida to Canada and from coast to coast.
Back to Predators Table of Contents. The multicolored Asian lady beetle is an introduced biological control agent that is spreading rapidly throughout the United States. Despite the fact it is an effective biological control agent in agricultural and landscape environments, it has become a major nuisance to homeowners because of its habit of invading houses and buildings in large numbers while searching for protected sites to overwinter in the fall mid-October to early November and appearing again on warm, sunny days in February and March.
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.
Ladybugs are often seen as a good luck charm. With their black-spotted backs and bold red color, ladybugs can be hard to miss, even despite their small size. Ladybugs look very similar to another insect often called Japanese or Asian beetles, which are often orange.