What to know about deer flies, and how to keep these nasty pests at bay

Among the plagues of Michigan, there are a few things which stand out: construction, snow and bugs. Among bugs, biting flies, including deer flies and black flies, are some of the most feared species in the state. Deer flies especially are relentless pests known to strike at any unknowing passerby which crosses their path. Here's what to know about these creatures, and how to prevent them from causing further annoyance.

What are deer flies?

Deer flies are similar to typical house flies, but are usually larger, measuring between 7-10 mm. They are yellow or black in color, have a striped abdomen, shiny eyes and black bands on their wings. They are bloodsucking insects and are common in most areas of the world. Deer flies are also known to bite, and for this reason are regarded as meaner than your average fly.

This image shows a deer fly.
This image shows a deer fly.

Where do deer flies live?

Deer flies favor damp environments and are most prominent in wooded areas and wetlands which provide ample spots for the flies to lay their eggs. Michiganders should be on the lookout for these flies while enjoying a trip to the lake or traveling up north to the sand dunes and other popular summer spots.

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Who should be on the lookout for deer flies?

Animals such as horses and dogs are common targets of deer flies. Those living in damp or wooded areas should also exercise caution. For outdoor lovers such as hikers, fishers and gardeners, deer flies may also be prevalent.

Tips to repel deer flies

Dragonflies are known to prey on deer flies, and if you're looking for a unique suggestion to tackle your deer fly problem, consider crafting or purchasing a dragonfly pin or clip to keep these pests away. If you'd prefer a more traditional route of preventing flies, other options include:

  • Using insect repellent, or soaking clothes and other gear in repellent

  • Wearing protective clothing, especially light colors, hats and long sleeves

  • Using fly traps or fly swatters to fend off unwanted guests

What to do if you get bitten by a deer fly

Deer flies are known transmitters of a bacterial infection known as tularemia, or rabbit fever, according to Healthline, so it's important to use proper precautions when in an area with a high population of deer flies.

Most fly bites don't pose serious risks, however, can be painful and appear red and swollen. In the case you end up with a bite, here's some steps to take to treat it:

  • Clean affected area with soap and water

  • Apply ice to the bite to reduce swelling

  • Use allergy medication to reduce itching

  • Seek medical care if symptoms worsen

This article originally appeared on Detroit Free Press: How to keep deer flies away