Deer flies and horse flies are significant pests during summer months in Minnesota. Large numbers of flies can swarm around and bite people who are trying to enjoy outdoor activities.
- Deer Flies
These flies are a little larger than a house fly and are stout-bodied. They are colored yellow or black and have dark colored markings on their wings. University of Minnesota Extension Service Yard and Garden Line News; August 1, 2012. Attention: Non-MDH link