Taxonomy Hierarchy
Identification & Morphology
Scale Size Index
Small to medium (4 to 7 millimeters)
Coloration & Banding
Dark brown to black with signature white lyre-shaped markings on the thorax and white bands on the legs.
Wing Morphology
Uniformly dark scales on wings without prominent spots.
Dimorphism (Male vs Female)
Females have simple antennae with few hairs and a needle-like proboscis for feeding on blood. Males have large, plumose (feathery) antennae and do not bite humans, feeding only on nectar.
Taxonomic Key Markings
Look for the signature white scales, specific mesonotal markings, and segment borders on the third and fourth legs.
Overview
Aedes aegypti, the yellow fever mosquito, is a small, dark mosquito recognized by silver-white scale patterns on its body. Originally native to Africa, it is now found in tropical, subtropical, and warm temperate regions worldwide. This species is infamous as the primary vector for several severe viral diseases affecting humans.
Behavior and Ecology
Unlike many native mosquito species, Aedes aegypti is highly adapted to urban settings. It lives in close proximity to humans, feeding almost exclusively on human blood to produce eggs. Females are aggressive biters and often enter houses to rest in dark places like closets or under beds.
Breeding and Lifecycle
A female Aedes aegypti requires only a tiny amount of water to lay eggs. They lay eggs individually on the damp walls of containers just above the water line. The eggs are incredibly resilient and can survive drying out (desiccation) for several months, hatching only when submerged in water again.
Development & Lifecycle
Egg Stage
Laid in rafts or singly on damp containers. Can survive months of desiccation.
Larval Stage
Hatch in water, hang from the surface using a respiratory siphon to breathe.
Pupal Stage
A short active stage (tumbler) during which metamorphosis occurs inside the cocoon.
Adult Stage
Emerges from the water surface, dries wings, and begins feeding/mating search.
Preferred Breeding Sites
- •Artificial water containers
- •Flower pots
- •Discarded tires
- •Blocked gutters
- •Bird baths
Habitat Preferences
- •Urban environments
- •Residential yards
- •Indoor spaces
- •Subtropical areas
Frequently Asked Questions
Does Aedes aegypti bite at night?
No, Aedes aegypti is primarily a daytime feeder, with peak biting activity occurring for a few hours after sunrise and before sunset.
How far do Aedes aegypti mosquitoes fly?
They have a very limited flight range, usually travelling no more than 100 to 200 meters from their breeding site during their lifetime.
Entomological References
- "Aedes aegypti and Aedes albopictus Vector Control Guidelines" by Centers for Disease Control and Prevention, published in *CDC Division of Vector-Borne Diseases Reports* (2023).[Access Source]
- "Global Vector Control Response 2017–2030 Update" by World Health Organization, published in *WHO Department of Control of Neglected Tropical Diseases* (2024).[Access Source]