Actual Size:  ⅛” to ⅜”

Characteristics: Gray to black; some having white, green or blue markings.

Legs: 6

Antennae: Yes

Wings: Yes

Habitat: Mosquitoes live and breed in stagnant, standing water sources such as ponds, rain gutters, storm drains, old tires, children’s wading pools, and more.


  • Usually rest during the day away from the sun and become active at dusk and dawn.
  • May fly for several miles in a single night depending on wind currents.
  • Most infamous for the dangerous diseases they can transmit worldwide

Mosquitoes in Illinois and Indiana

Mosquitoes are considered to be one of the most dangerous animals in the world due to the threat they pose to human health. In addition to simply being a nuisance, these pests are known for the itchy bites they leave behind. Most bites leave you with red, itchy marks that fade with time. However, bites can transmit a number of infamous diseases, from malaria and West Nile to the Zika virus. According to the World Health Organization (WHO), mosquito bites result in the deaths of more than 1 million people every year, with the majority of these deaths due to malaria. There are about 200 different species of mosquitoes found throughout the United States, with habitats ranging from deserts at or below sea level to mountain meadows with elevations of over 10,000 feet.

Mosquito Habitat

Mosquitoes are a common pest nationwide. They are commonly found around marshes and lakes, which is where they lay eggs in stagnant or slow-moving water. These insects only need a half-inch of standing water to breed, which is why homes are prime targets. Mosquitoes can be found in kiddie pools, metal buckets, flower pots, and any object that collects rainwater or excess water from irrigation systems. For this reason, it is extremely important that homeowners regularly check their property for containers that could be collecting water if they wish to prevent a mosquito problem.

Mosquito Behaviors, Threats or Dangers

Most mosquito species require a blood meal before they can reproduce a batch of eggs. Many people and animals are bitten by mosquitoes with no side effects except the typical itchy welts or marks. Though rare here, mosquito bites have been known to transmit the world’s worst diseases and viruses. Most people infected with mosquito-transmitted viruses show no symptoms or only mild, flu-like symptoms that may not result in a visit to the doctor. However, severe symptoms following infection occur in a small percentage of people. Mosquitoes are also responsible for transmitting heartworm in dogs.

If you suspect a mosquito infestation, contact a mosquito control professional immediately.