Under optimal conditions, emergence of adults can occur in as little as six days following egg hatch. Swarming and Mating About two days after emergence, males are sexually mature and begin to swarm at twilight over the top of bushes or small trees. These swarms usually last no more than 30 minutes. After mating, females engage in various forms of searching flights. They may make short flights in search of nectar to sustain nonstop migratory flights in search of hosts.
Migration is usually unidirectional and upwind.
It is usually associated with broods of mosquitoes that number in the millions. Wind speed, direction, landscape topography and the availability of nectar influence migration patterns. Bloodfeeding Host seeking occurs in the evening and to a lesser extent in the morning. Females do not seek hosts to any great extent during darkness. In daytime, hosts that move near resting females may be attacked.