Millipede (and Friends) Invasion

Recently the following question came to the AnswerLine inbox: I have little worm-like bugs, both dead and alive, in my basement; they are especially found in the corners and damp areas. How do I get rid of these?

AnswerLine replied: Without a picture, we cannot be certain. However, something that is common and fits your description is a type of millipede. They are found in damp areas around foundations, basements, etc. Here is an Extension publication from the University of Minnesota that has some photos and management instructions: http://www.extension.umn.edu/garden/insects/find/sowbugs-millipedes-centipedes/

Reply: It is Millipedes.  Thanks for the help.

With the unusual wet conditions that the Midwest is experiencing this year, it is quite possible that many will be seeing millipedes and their counterparts (sowbugs, centipedes, pillbugs, roly-polys) in basements and crawl spaces, around foundations, and damp places in the yard this year.

Spirobolid millipedes gathered on a piece of tree bark

Millipedes and company are unusual arthropods or a many-legged relative of insects. Millipedes, usually dark brown in color, have worm-like bodies with two pairs of legs per body segment and a pair of antennae. When they die, they usually coil because coiling is their first means of defense. Dead or alive, they can simply be swept or vacuumed and disposed of outside.

While they do frighten people, they are more of a nuisance than harmful. They do not bite or pose any danger to humans, transmit diseases to plants or animals, or cause damage to the home or food per information provided by Colorado State University Extension. They often move into the home in the spring and fall but unless they find moisture, they will usually die within two days.

These many-legged insect relatives are actually beneficial in the landscape. They feed on aphids and other soft-bodied insect pests and, like worms, recycle decaying organic matter.

If infestation is a problem, the University of Minnesota and Colorado State University Extension publications linked above provide management information.

Marlene Geiger

Marlene Geiger

I am a graduate of the University of Nebraska-Lincoln with a BS in Home Economics Education and Extension and from Colorado State University with a MS in Textiles and Clothing. I enjoy spending time with family and friends, gardening, quilting, cooking, sewing, and sharing knowledge and experience with others.

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