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Asian lady beetle against a white background - Keep asian lady beetles out of your home with City Termite & Pest Control in Malvern, AR

Asian Lady Beetle

Actual Size: 6 to 10 mm

Characteristics: Varies from mustard-yellow to dark reddish-orange, often with spots on their wing covers, though some individuals may lack these spots

Legs: 6

Antennae: Yes

Wings: Yes

Habitat: Commonly found in crops, attics, wall voids, and on the sides of homes and buildings.

Habits: 

  • Slightly larger than the typical ladybug.
  • Features distinctive dark “M” shaped markings on the pronotum, just behind the head.
  • As a defense, they release a yellow, foul-smelling substance from their joints.


Asian Lady Beetles in Central Arkansas

The multicolored Asian lady beetle was introduced to the United States from Asia between 1978 and 1981 to combat aphids, scale insects, and other crop pests. Since then, they have spread widely across the country, from Mississippi to the Midwest, Southwest, and Pacific Northwest. They often enter homes in large numbers, becoming a common overwintering pest in buildings and homes.

Asian Lady Beetle Habitat

This species is a formidable predator of agricultural pests and can produce several generations each year. Their tendency to gather in large numbers and infiltrate structures makes them a significant nuisance. Large infestations, with hundreds or even thousands of beetles, can occur inside and on homes. They are commonly found in attics, wall voids, on siding, and inside closets, and are attracted to light.

Asian Lady Beetle Behaviors, Threats, or Dangers

While Asian lady beetles may bite, their bites are not harmful to humans and do not transmit diseases. When disturbed or crushed, they emit a foul odor and can leave stains. In the fall, these beetles seek out crevices and protected areas around homes to overwinter, often congregating in attics, wall cavities, cracks around door frames, and within soffits and wall voids. Inside homes, large numbers of beetles can stain drapery and clothing. Although they cannot survive sub-freezing temperatures, they can live within homes and buildings that provide sufficient warmth and humidity.

If you are dealing with an infestation, always contact a licensed beetle exterminator.