Culex pipiens

Culex pipiens is a species of mosquito commonly referred to as the common house mosquito or northern house mosquito, as it is the most common mosquito to the northern regions of the US. They can be found in both urban and suburban temperate and tropical regions across the world.

Culex pipiens' diet typically consists of vertebrate blood, as they consume human blood, but prefer bird blood of species that are nearly linked to human interaction, such as doves and pigeons. Furthermore, at the end of the summer and the start of the fall season before it is time for them to overwinter, C. pipiens subsist on nectar and other sugary food sources in order to store fat.

In California populations, it was shown that most females of Culex pipiens do not enter reproductive diapause during the winter, which differs from other mosquito species, such as Culex stigmatosoma or Culex tarsalis. Most of them overwinter in a stage of host-seeking arrest. The practice of overwintering tends to vary based on location, and in effect temperature and the period of time per day an organism receives sunlight, also known as the photoperiod. Parous females may overwinter together with nulliparous. Overwintering mosquitoes are considered as hibernating by mosquito scientists.

Typically, mosquitoes copulate when temperatures are the most temperate, and many species begin breeding when temperatures reach 50 °F (10 °C). Because of this temperature condition, mosquito breeding seasons vary by region and climate characteristics of a given area.