Knowledgebase

What is this bug #942575

Asked August 16, 2026, 4:40 PM EDT

New house build in a sandy tilled field, These flies are covering outside structures in the thousands. They do not bite. Are they a stage of development or adult? Where have they emerged from? I assume disturbed soil. Thankyou for your input.

Isanti County Minnesota

Expert Response

These mixes favor environments similar to mosquitoes and are attracted to lights.  

It may help to put yellow bulbs in your outdoor lighting, draw your drapes and use fans in areas they gather.   

Eliminate any standing water sources. 


https://apps.extension.umn.edu/garden/diagnose/insect/general-curiosity-insects/flies/small/chironomidmidges.html

Kim Sullivan Replied August 16, 2026, 6:07 PM EDT

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