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Asian Lady Beetles


Asian lady beetles can be hard to correctly identify, because of the range in colors and the similarities to other bugs. They do have a marking in the shape of a W on the base of their heads, which is one way to distinguish them from other, similar bugs. These bugs generally enter homes during the cooler months, beginning in October. They are attracted to warm sides of homes. They are not dangerous to humans, but are incredibly annoying when they enter the home. If you think your home is infested, call Nashville Pest Control to correctly identify and get rid of the problem for you.

Appearance and Life-cycle:

The Asian lady beetle is commonly mistaken for a lady bug, but there are key differences that distinguish the two bugs. The Asian lady beetle can be a range of different colors. They can be anything from yellow and orange to black. Male Asian lady beetles do not always a have spots. They have a domed shaped appearance and a marking of a W on the base of their heads. The Asian lady beetle is about 7mm long.
The females can lay up to 1,000 eggs. They hide the eggs in clusters on the underside of plant leaves. It can take about 5 days for the eggs to hatch. Generally, it takes 15 to 25 for an egg to become an adult, but it depends greatly on the environment.

Habitat and Behavior:

The Asian lady beetle typically begins to enter homes when the weather gets cooler. This generally begins in October, which is why they can also be called Halloween beetles. They are drawn to warm sides of the home and will enter through the cracks and crevices. They hide in attics and behind wall voids during cool weather months. When the weather warms up, they will try to move back outside.

Level of Danger:

The Asian lady beetle is not dangerous, but are aggravating when they enter the home in large numbers. They can be especially destructive to fruit crops, because they feed on ripened fruit.

Signs of Infestation:

The biggest sign of an Asian lady beetle infestation is the appearance of a large number of the bugs around the home. These bugs will return to the same place year after year. You might also see the yellow – colored secretion that they deposit on surfaces.


To prevent the Asian lady beetles from overtaking your home, seal all the crack and crevices in the foundation and around the doors and windows. Make sure screens are intact as well. They will return to the same places every year, so if your home does get infested, it is important to call professionals, like those at Nashville Pest Control. They can keep your home protected year after year.

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