All insects, including mosquitoes, begin life as an egg. After some time, eggs will hatch into mosquito larvae, resembling small, aquatic caterpillars. Mosquito larvae spend the majority of their time eating, grooming, and evading predators. Mosquito larvae molt their skin four times over the course of their lives, each time growing a little larger.
Following the fourth and final larval molt, larvae metamorphose into a cocoon stage, called a pupa. Mosquito pupae no longer eat, similar to caterpillar cocoons, and are preparing to emerge as adults. Unlike caterpillar cocoons, however, mosquito pupae are highly mobile and capable of evading predators.
After a short time, mosquito pupae emerge as winged adults. Adult mosquitoes are most vulnerable immediately after emerging from the water, as their wings are not immediately ready to fly. After a short time, however, adult mosquitoes take flight, and seek their first meal: most often nectar from a nearby plant, as most mosquitoes rely on plant nectar for food.
Not all mosquitoes drink blood. Many species of mosquitoes rely on nectar their entire life, which can range from one week to two months, without ever needing blood. However, in many species, female mosquitoes require blood in order to obtain protein to produce eggs; male mosquitoes do not drink blood. Soon after a bloodmeal, females are ready to lay another batch of eggs, repeating the cycle once more.
Six Most Common Species in St. Tammany
The Brown Salt Marsh Mosquito
The Brown Salt Marsh Mosquito
Scientific Name: Culex salinarius
St. Tammany Distribution: coastal and widespread
Larval Habitat: fresh or brackish marsh with decaying vegetation
Diseases transmitted: West Nile virus, Eastern equine encephalitis virus
The Inland Floodwater Mosquito
The Inland Floodwater Mosquito
Scientific Name: Ades vexans
St. Tammany Distribution: widespread
Larval Habitat: woodland ground pools
Diseases transmitted: West Nile virus, canine heartworm
The Southern House Mosquito
The Southern House Mosquito
Scientific Name: Culex quinquefasciatus
St. Tammany Distribution: widespread in suburban and urban areas
Larval Habitat: organically rich water; common in ditches with malfunctioning septic systems
Diseases transmitted: West Nile virus
The Asian Tiger Mosquito
The Asian Tiger Mosquito
Scientific Name: Aedes albopictus
St. Tammany Distribution: widespread in suburban and urban areas
Larval Habitat: water holding containers
Diseases transmitted: West Nile virus, Zika virus, Chickungunya virus, dengue virus
The Yellow Fever Mosquito
The Yellow Fever Mosquito
Scientific Name: Aedes aegypti
St. Tammany Distribution: small population in southern Slidell
Larval Habitat: water holding containers
Diseases transmitted: Zika virus, Chikungunya virus, dengue virus
The Eastern Salt Marsh Mosquito
The Eastern Salt Marsh Mosquito
Scientific Name: Aedes sollicitans
St. Tammany Distribution: coastal
Larval Habitat: brackish to salt marsh
Diseases transmitted: Eastern equine encephalitis virus, Venezuelan equine encephalitis