Any one of various species of gnats of the genus Culex and allied genera. The females have a proboscis containing, within the sheathlike labium, six fine, sharp, needlelike organs with which they puncture the skin of man and animals to suck the blood. These bites, when numerous, cause, in many persons, considerable irritation and swelling, with some pain. The larvæ and pupæ, called wigglers, are aquatic.
- Any of various two-winged insects of the family Culicidae, in which the female of most species is distinguished by a long proboscis for sucking blood. Some species are vectors of diseases such as malaria and yellow fever. Also called regionally skeeter. See Regional Note at possum.