Aedes aegypti and Aedes albopictus
Aedes aegypti, the Yellow Fever mosquito, mostly feeds on humans and has adapted to become a sneaky feeder, usually approaching the host from behind and biting around the ankles and elbows. They prefer biting people, but will also bite domestic animals. It is common in urban areas in the Southern USA.
Aedes albopictus, the Asian Tiger mosquito, is also an aggressive feeder, and feeds on people and pets, including cats, dogs, and squirrels.
Asian Tiger mosquitoes are more common in suburbia. Their eggs can overwinter in colder climates than aedes aegypti.
Both species use man-made containers for egg laying and development, and both bite during the daytime, as well as at dusk and dawn.
Aedes aegypti mosquitoes typically lay eggs along the waterline, inside man made containers. They prefer clean water, such as rainwater, and the containers can be as small as a bottlecap. The may also use natural places to lay eggs, such as holes in trees or standing water in leaves.
After drawing a blood meal from a person or an animal, a female Aedes aegypti can lay 100 or 200 eggs. They will spread out their egg deposits among several different containers. This is called oviposition behavior.
The eggs may hatch from anywhere between a few days or over months, depending on the weather and when the container is refilled with water.
Aedes albopictus eggs are very good at overwintering. This is called diapause. This allows them to overwinter in harsher climates than Aedes aegypti.
These egg laying strategies have caused these species to spread all over the world. Aedes aegypti mosquitoes originally came to the New World from Africa on sailing ships, inside barrels of water.
Aedes albopictus arrived in Houston, Texas in 1985 inside a shipment of tires from Asia. Once here, both species established permanent populations in the Southern USA.