These are small flies known to consume blood from living vertebrae. It is small and long legged with females having piercing and sucking mouth parts. The male mouth parts can suck but have no piercing capabilities. The female is responsible for the whining sound produced by mosquitoes caused by the vibration of the thorax membrane.
The females are mostly blood eating and can transmit harmful diseases to livestock and humans. However most of them suck blood while creating a high to low pressure in the blood to keep from transmitting illness.
They have four stages in their life cycle made up of egg, larva, pupa and adult stages. The first stages are mostly aquatic and last for a maximum of 15 days. Their adult life span can be as little as weeks to as much as several months. The female typically lays eggs in stagnant water or under aquatic plants.
Generally male and female mosquitoes feed on nectar or plant juices which help in getting energy. The females also have a piercing mouth parts which they use to suck blood from animals. In most cases, the female sucks on blood, to gain proteins to help them produce eggs.
They can locate their host by detecting carbon dioxide emission and sweat or through optical recognition. Before and during the time they suck on blood they inject saliva that has anti coagulation properties to help keep their proboscis from being clotted with blood. The saliva is also the way in which disease causing pathogens are delivered into the host.