How Do Deer Flies Look Like?

Hey there! Some links on this page are affiliate links which means that, if you choose to make a purchase, I may earn a small commission at no extra cost to you. I greatly appreciate your support!

Deer are gorgeous creatures. And yet, these creatures often share their habitat with deer flies. Now, deer flies are a terrible pest for humans. Not only can they cause you pain and disease, but they also harm your livestock and pet animals. So, keep reading to learn all about deer flies!

How do deer flies look?

How do deer flies look?

Deer flies are a type of fly that is found throughout North America. They range in size from about ΒΌ to 1/3 inches long and have a black body with yellow stripes.

Deer flies are easy to identify due to their unique markings on their wings. The clear wings have dark bands or patches that contrast against the rest of the fly’s body.

Deer flies, also known as black flies, can also be found near and around water bodies. Some of the other distinctive deer fly characteristics are their large, often brightly colored eyes and the fact that they swarm around their prey in large numbers.

Deer flies can be a nuisance to humans, as they often bite and suck blood. Luckily, there are some ways to repel them.

Deer flies also have characteristic long antennae that are usually much longer than their head. Additionally, they are brown or black in color and have a hairy body.

What is the habitat of deer flies?

Deer flies' habitat

Deer flies are common in areas near water sources, such as marshes, ponds, and streams. They thrive in humid environments and can be found near the ground or in trees.

Deer fly bites can be painful and cause an allergic reaction for some people, so it is important to take steps to repel them.

Deer flies are most active during the summer months, typically peaking in June and July. They are found throughout much of their distribution area, so chances are you’ll encounter them at some point if you live in North America.

Do all deer flies bite humans and animals for a blood meal?

Deer flies bite humans whenever they get a chance.

Deer flies are a type of fly that is found near water and in areas with tall grass. They are all attracted to movement and can bite both humans and animals. Deer fly bites can be painful and cause itchiness.

Deer fly saliva contains an anti-coagulant substance, which means the bites keep bleeding for a while. This can make the experience quite unpleasant. Additionally, deer flies are attracted to movement and carbon dioxide, so people and animals tend to be bitten more often.

Though deer fly bites are not always serious in nature, some people are allergic to the saliva of these pests. In fact, deer fly allergies can cause reactions such as swelling and itchiness.

There are, much to our relief, a number of ways to repel deer flies, including using insect repellent, wearing protective clothing, and installing screens or nets over doors and windows.

What is the predominant diet that these blood-sucking insects deer flies follow?

Deer flies feed on rotting vegetation among other things.

Deer flies are a type of fly that is found near water. They are attracted to movement and follow their prey until they can land a bite.

The predominant diet of deer fly larvae is organic debris. This means that they will feed on things like dead animals, feces, and rotting vegetation. However, pupae do not feed and will only drink water.

As a result, deer flies are often associated with unsanitary conditions. They can be a nuisance to humans and pets, as they are attracted to scent, movement, and blood.

Deer flies have many predators, including frogs and toads, spiders, wasps and hornets, dragonflies, and some bird species.

What can you do about deer fly bites?

Yes, deer flies do bite. Deer flies are a type of fly that feeds on the blood of mammals, including humans. Female deer flies will continue to return to a host if their feeding behavior is interrupted for some reason.

In addition, deer flies can bite people, and this may cause skin rashes. The typically observed symptoms of deer fly bites include localized swelling and an itchy red area around the bite.

If you are bitten by a deer fly, you should apply ice to the area, avoid scratching the bite, and seek medical attention if the symptoms worsen.

This can be quite irritating and even painful for people who are bitten by deer flies. There are a few things you can do to help repel them, including using insect repellent, wearing clothing that covers your skin, and avoiding areas where they are known to congregate.

If someone is bitten by a deer fly, they should wash the area immediately with soap and water. If the bites are severe, a doctor may need to be contacted.

What is the life cycle of an average deer fly?

The life cycle of a deer fly goes through four stages: egg, larva, pupa, and adult.

The larvae of deer flies go through their development in the muddy areas and aquatic marshes that are present along the edges of bodies of water such as ponds, stream banks, wetlands, or seepage areas.

Female deer flies lay batches of 100 to 800 eggs on vegetation that stands over water or wet sites. The eggs hatch within two days, and the larvae drop into the water to begin their development.

The life cycle of a deer fly starts with the eggs being laid on the ground near animal manure or carcasses. The larvae hatch and fall on the ground, which is where they feed on decaying organic matter or small organisms in the environment.

After maturing, the larvae crawl to drier areas to pupate and, in a matter of a few weeks, emerge as adults. When not flying to locate a host, adults rest on shrubbery or tall grass.

What are the pest control solutions for the biting insects known as deer flies?

Deer flies are a type of biting fly that is difficult to control because of their wide range and widespread habitat. They can be found in many parts of the world and can be a pest to both humans and animals. 

There are a number of different pest control solutions for deer flies, but they all require some level of effort and cooperation from the homeowner or business owner.

Insecticide use should be targeted to the larval stage, using a residual spray that will last 10-14 days. Adult deer flies can also be controlled with an insecticide; however, this is less effective than targeting the larvae. 

If you are experiencing a large population of deer flies, it is best to contact a pest management professional who can provide advice and solutions specific to your needs.

Though deer flies are not as harmful as some other pests, they can be a nuisance. There are several methods that people use to help control the population of deer flies. These methods include traps, repellents, and covering exposed skin.


Deer flies are ugly and unwanted flies. I don’t mean to be discriminatory but let’s face it. Nobody in the world wants to be bitten by flies that carry diseases and can leave painful bite marks! Therefore, make sure your surroundings are entirely clear of deer flies!

About the author

A biotechnologist by profession and a passionate pest researcher. I have been one of those people who used to run away from cockroaches and rats due to their pesky features, but then we all get that turn in life when we have to face something.