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Encounter with Giants: Gallinipper, The Big Florida Mosquito

In the lush landscapes of Florida, where the sun glistens off the waters and the palm trees sway, there lurks a creature so notorious it has buzzed its way into Southern folktales and blues songs. We're not talking about the mythical skunk ape or a ghostly pirate ship, but rather a very real and very large insect—the Gallinipper, or Psorophora ciliata.

Known colloquially as the "big Florida mosquito," or floodwater mosquito, this sizable pest is a living testament to the state's biodiversity and the tales that come with it.

Key Takeaways

  • Gallinippers, or Psorophora ciliata, are giant mosquitoes in Florida known for their size and aggressive feeding habits, often requiring more than standard repellents to manage.

  • These mosquitoes are resilient, with eggs that can hatch in large numbers post-storm, highlighting the importance of proactive pest control measures.

  • Engaging professional pest control services is essential for effective Gallinipper management, providing peace of mind and protection for your outdoor activities.

How Big is The Giant Mosquito?

A close-up image of the Gallinipper

Imagine a mosquito—the bane of any outdoor event—now picture it 20 times larger. That's the Gallinipper for you. Entomologist Phil Kaufman of the University of Florida once famously compared the invasive Asian tiger mosquito and the Gallinipper by posing them side by side to impress upon people their huge size difference.

With a body about the size of a quarter, these giants are hard to miss. Their sheer size is enough to give even the bravest outdoor enthusiast a moment's pause.

The Gallinipper

Facts about these mosquitoes

Woman holding her right arm after being bitten by a mosquito

The Gallinipper is an outlier in the mosquito world. Not only does it dwarf most common mosquitoes, but it also defies the typical behavior patterns of its smaller cousins. These behemoths are notoriously aggressive feeders, both day and night, unlike most mosquitoes which prefer the dusk and dawn hours. They're not just opportunistic; they're relentless.

Their life cycle is deeply intertwined with the weather patterns of the Sunshine State. Heavy rains and tropical storms are like a dinner bell for Gallinippers, signaling a bumper crop of these pests. And when they come out, they come out in force.

The bite of a Gallinipper is as memorable as its size, delivering a sting that's far from the itchy annoyance we're used to. It's a painful reminder that size does matter when it comes to mosquitoes.

Even in their larval stage, these huge mosquitoes are a force to be reckoned with. They are voracious predators, feasting on tadpoles, small aquatic creatures, and even most mosquito larvae. They're not above cannibalism, either, sometimes preying on their own kind.

As adults, Gallinippers are capable of biting through clothing, rendering typical protective measures like long-sleeved clothing almost useless. They're not picky eaters, targeting pets and wild animals alongside humans.


These mosquitoes are identifiable by their distinctive yellow scales on the thorax and the shaggy, zebra-patterned hair on their back legs. They're not just big; they're strikingly patterned, too.

Breeding grounds

An overgrown garden filled with grass and other weeds

Gallinippers favor floodwater for their nurseries, which is why they're also referred to as floodwater mosquitoes. They lay eggs in the moist soil of low-lying areas. These eggs can remain dormant for long periods, awaiting the next rainy cycle as it is these perfect conditions of rain or floodwaters that allow them to hatch.

They're most prevalent in the rural or grassy overgrowth of Florida, which is prone to flooding, as well as in salt marshes and wooded locales.

But don't expect that summer will bring relief. If rain collects, just a little bit, those dormant eggs laid long ago will hatch and become a new cycle of pest to deal with.

Life cycle

Fortunately, the Gallinipper's lifespan is short, typically around a week. And while they are a nuisance, they have not been documented to transmit mosquito-borne illness to humans. However, they are known carriers of heartworm, which can be transferred to dogs through their painful mosquito bites.


Though they are primarily found in rural areas, don't be fooled into thinking you're safe in the city. Gallinippers have a flight range of over 20 miles, meaning they can venture far from their breeding grounds in search of a meal.

The Essential Defense Against Florida's Giant Mosquitoes

While the Gallinipper, or the "big Florida mosquito," may seem like the stuff of minstrel shows and folklore, their presence is very real and can be quite distressing. Unlike other mosquitoes, these giants don't follow the usual playbook.

The giant mosquito breed doesn't lay eggs in standing water, so the typical advice of eliminating such breeding grounds, while effective for controlling other mosquito larvae, won't curb its population.

Insect repellents, often our first line of defense against the bites of smaller mosquitoes, are also less effective against these behemoths. Over the past century, some Gallinippers have shown a remarkable tolerance to chemical repellents, including DEET.

Similarly, natural deterrents like citronella, which may work for other insects, don't seem to faze these giants. Their large size and aggressive nature require more than DIY methods.

Professional pest control

But don't worry. If you live in Florida, particularly in the Port St. Lucie or Delray Beach areas, you can count on professionals to deal with your large insect problem.

Professional pest control services have the expertise and resources to tackle these challenging pests. They use a combination of strategies tailored to the Gallinipper's unique behaviors. These may include targeted treatments that affect only the mosquitoes, thus preserving other beneficial species and the environment.

With a comprehensive approach, pest control professionals can protect your summer evenings and outdoor activities from being disrupted by these painful bites.

As Florida continues to be a hub for diverse species, including the invasive Asian tiger mosquito and the native giant mosquitoes, the role of pest control becomes increasingly important. Whether it's a rural homestead or a suburban backyard, professional pest control services are the key to keeping the Gallinipper's aggressive feeding habits at bay.

Battle the Gallinipper with Southeast Florida Pest Control

Gallinippers may be a tough opponent with their painful bites and relentless feeding, but Southeast Florida Pest Control has the solution. Our INZECTO Mosquito Trap System targets these giant mosquitoes effectively, offering you and your family protection around the clock. It's an environmentally friendly option that's safe for your pets and doesn't harm beneficial insects like bees or butterflies.

This system, with its patented technology, is a game-changer in the world of mosquito defense. It targets the very heart of the mosquito lifecycle, ensuring that these giants are stopped in their tracks before they can invade Florida skies in large numbers.

Don't let mosquitoes take over your summer and feed on you. Contact Southeast Florida Pest Control to learn more about our advanced techniques and quality products that keep these pests at bay. Call us at 855-798-1186 today for your FREE estimate and take the first step towards a Gallinipper-free outdoor experience.


In conclusion, while this large mosquito breed may not carry diseases to humans, its presence is a stark reminder of the importance of mosquito control, especially post-storm. With their impressive size and aggressive nature, Gallinippers are a force to be reckoned with, capable of biting through clothing and flying over 20 miles in search of a meal.

While DIY methods and common repellents fall short, professional pest control services offer effective, targeted strategies to keep these giants at bay, ensuring your outdoor spaces remain comfortable and enjoyable all summer long.

Frequently Asked Questions

What are the giant mosquitoes in Florida?

The giant mosquitoes in Florida, often referred to as Gallinippers, are actually a species known as Psorophora ciliata. These intimidating insects are notable for their large size and painful bite.

They're not just a feature of Southern folklore. They're very much a real part of the Florida ecosystem. While they may look fearsome, it's important to note that they have not been documented to transmit West Nile virus or other diseases to humans, unlike some of their smaller mosquito relatives.

What are those giant mosquitoes?

Those giant mosquitoes you may encounter, especially in the summer months in Florida, are likely Psorophora ciliata, commonly known as Gallinippers. They can be identified by their impressive size, which is significantly larger than the typical mosquito, and their aggressive feeding habits.

They're a species that has been a part of the Florida landscape for a long time, often laying eggs that can hatch into large numbers of larvae after heavy rains or floods.

Are Florida mosquitoes different?

Yes, Florida mosquitoes can be quite different from those in other regions of North America. Florida's warm climate and extensive wetlands create an ideal breeding ground for a variety of mosquito species, including the native giant mosquito, Psorophora ciliata, and the invasive Asian tiger mosquito.

Florida entomologists and researchers from universities and agricultural sciences are continually studying these species to understand their behaviors and impact on the ecosystem.

What are the mosquito looking bugs in Florida?

In Florida, you might come across several mosquito-looking bugs, but not all are mosquitoes. Some could be crane flies or midges, which are often mistaken for mosquitoes due to their similar appearance. However, when it comes to the true mosquitoes, Florida is home to many species, including the notably large Psorophora ciliata.

These giants are known for their size, which can be as large as a quarter, and their larvae are often found in standing water after rains, feeding on tadpoles and even other mosquito larvae.

If you suspect you have a bug problem, call us at 855-798-1186.


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