Boxelder Bug

 Identification and Control

Proper identification is an important first step in controlling ants.

Boisea trivittata

How to Identify an 

Boxelder Bug

Boxelder bugs are black with red markings on their body. They look similar to red fire bugs and other related groups. Immature forms are smaller but easily distinguished from the adults by their lack of wings and red abdomens.

Where do they come from?

Boxelder bugs are a nuisance, but they are not a health threat. They congregate on exterior walls of buildings in spring and fall and can come indoors and annoy occupants. They overwinter in cracks and crevices in buildings. They also may stain lightly colored materials.

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What do they look like?

Boxelder bugs are black with red markings on their body
Box elder bugs congregate on exterior walls
They can be found on sunny areas of concrete in colder weather

Where do they live?

Boxelder bugs are found in and around buildings in the spring and fall. They prefer female boxelder trees. During the winter they can be found in cracks and crevices of buildings, especially in sunny areas of exterior walls or leaf littler.


Boisea trivittata



Boxelder bugs prefer box elder seeds, which are only found on female boxelder trees, but may feed on other maple seeds as well.

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