Mosquitoes belong to the same group as the true flies, Diptera. As such, they have a single pair of wings. They typically have long, thin legs and a head featuring a prominent proboscis. Mosquito bodies and wings most often are covered in tiny scales. Adult sizes may range from 3 to 9 mm.
Mosquitoes are known the world over for their itchy “bites.” But they’re also known for spreading some of the world’s worst diseases, including malaria, yellow fever, encephalitis, and dengue.
Most female mosquitoes lay their eggs—up to 200 at a time, depending on the species—in water or near it, although not all species must hatch their eggs in water. Favorite places to lay eggs include any place that water pools, such as marshes and swamps, plus tree holes, discarded containers, and poorly maintained swimming pools. Transparent parts that cover the mosquito egg keep it from sinking. In warm weather, most eggs hatch within three days.