You’ve probably experienced hopelessly swatting at a swarm of flies while trying to enjoy a sunny day outside, and you’re far from the only one. Each summer – or even year-round if you’re in a warmer climate such as Texas or Florida -, midge flies can become a major nuisance wreaking havoc on property and recreational time and driving residents away from outdoor resources.
But, what even is a midge fly? And how can you reduce them on your property?
What’s a Midge Fly or ‘Blind Mosquito’?
Midges refer to several species of small, non-mosquito flies. To get more specific, midges come from the family Chironomidae (referring to midges) in the order Diptera (referring to flies overall). There are two main species – Chironomidae and Chaoboridae.
Now, to put in terms that are more useful, midges are small, dainty flies (although some species can be bulkier) with one pair of long, narrow wings, and long, skinny legs. Males tend to have feathery antennae used to hear the high-pitched sounds emitted by the female’s wings.
While midges are usually found near naturally occurring lakes and ponds in small, non-nuisance levels, the abundance of nutrients within stormwater systems acts as a beacon to breeding midges and they can reproduce in vast quantities. That’s when they become an issue in communities.
What’s the Difference Between Midges and Mosquitoes?
Midges and mosquitoes are often mistaken for each other, which makes sense given that both belong to the order Diptera (although their larvae control is very different). The largest difference between the two is that mosquitoes have a proboscis, a mouthpart used to bite and suck blood. Midges do not, and do not bite humans.
Otherwise, most of the differences visible to the eye are found in the fine details.
Midges have the following characteristics:
- When landed, fold their first leg pair in a ‘prayer’ position (which can be mistaken for antennae)
- Have long tarsi of foot portions of the forelegs
- Lack scales on their wings, making them smooth
Mosquitoes have the following characteristics:
- When landed, hold their second/back leg pair in the air
- Have scaly wings with a light fringe on their tips
- Typically don’t form swarms
Where are Midge Flies Found?
It’s also common to see midges in big swarms or ‘clouds’ in the air, often around dusk (some people in the south refer to these as ‘gnat-balls’). This can be when a lot of people or community residents become irritated or frustrated by their presence.
In terms of geography, midge flies can be found almost anywhere. But in certain southern states, such as Florida or Texas, their warm climates allow populations to thrive year-round.
Do Midge Flies Bite?
Thankfully, midge flies don’t bite humans – in fact, they only live for a few weeks at most and thus rarely eat anything in their adult stage beyond nectar, fruit juices or sugar water. They can land and crawl around the skin, which many find irritating and unwanted.
Why Do Midges Keeping Popping Up?
Part of what makes midges so difficult to control is their ongoing lifecycle that starts in ponds, lakes and stormwater systems and ends on land. Midges have a four-stage lifecycle, starting as eggs laid on a waterbody’s surface before sinking into the muck. These eggs hatch into larvae that, depending on the species, either borrow further into the sediment or swim freely through the water. The larvae develop into pupae before emerging as fully formed, flying adults. This ongoing process can take as little as two to three weeks.
That means that if you’re trying to control midges by just combating the adult ones flying around, you still have plenty of them in eggs, larvae and pupae stages, ready to continue the cycle.
How Do You Control Midge Flies?
There are plenty of reasons to get rid of or control the midge flies in your area. Not only are they annoying when they swarm around waterfronts, ponds, lakeshores, or docks, but they can also cause property damage on painted or wooden surfaces.
Most bug sprays don’t go far in terms of keeping individually midge flies away, and they certainly are powerless against swarms or heavily populated areas near waterfronts, boats, or shorelines. And while helpful in temporarily mitigating midges, pesticides alone won’t solve the problem in the long-term as midges continuously breed and migrate from nearby waterbodies.
Instead, here at Clarke, we recommend an integrated approach that combines chemical, biological, and preventative methods to keep midges away while also working to control the population. To learn more about how we approach the below, click here.
- Surveillance – take samples of midges to identify which are present and estimate their population levels (as well as to figure where they are coming from).
- Nutrient Abatement – midges are attracted to stormwater ponds in particular as they have tons of weeds and algae as well as nutrient-rich waters from runoff – things larvae feed on. But there are ways of safely reducing these, as well as making sure water stays circulating rather than still and stagnant.
- Aeration Systems to keep water in constant motion
- Littoral / Shoreline Planting to absorb nutrient run-offs
- Algae Control to improve overall water quality
- Biological Control – sometimes the addition of certain fish, which feed on the midges, can act as a natural control. Make sure that this fish species and the amount is estimated by someone with experience – adding the wrong fish, the wrong quantity, or adding into the wrong waterbody can have adverse effects.
- Chemical Control – done mainly to reduce annoyance, these may include larvicides applied to waterbodies, ULV adulticide, barrier treatments applied to siding and foliage, or more.
If you’re looking to control midge fly populations around your home, pond, or community, contact Clarke here for an estimate or learn more about our midge control practices here. We have decades of experience in dealing with pests of all kinds – including midges.