|A female biting midge, Culicoides sonorensis|
Ceratopogonidae is a family of flies commonly known as no-see-ums, or biting midges, generally 1–3 mm in length. The family includes more than 5,000 species, distributed worldwide, apart from the Antarctic and the Arctic.
Ceratopogonidae are holometabolous, meaning their development includes four life stages: egg, larva, pupa, and imago or adult, taking two to six weeks. Both adult males and females feed on nectar. Most females also feed on the blood of vertebrates, including humans, to get protein for egg-laying. Their bites are painful, and can cause intensely itchy lesions. Their mouthparts are well-developed for cutting the skin of its host. Some species prey on other insects.
Larvae need moisture to develop, but also air and water, so they are neither aquatic nor terrestrial.
Some species in other genera are predatory on other small insects.
Like other blood sucking flies, the Culicoides species can be vectors of disease-causing pathogens. Among diseases transmitted are the parasitic nematodes Mansonella, bluetongue disease, African horse sickness, epizootic hemorrhagic disease, arboviruses, and nonviral animal pathogens.
Historically, numbers were managed with the insecticide DDT. They can be trapped by luring them with carbon dioxide. Most midges are small enough to pass through ordinary insect window screening. They can be repelled with DEET, oil of eucalyptus, or Icaridin.
The Forcipomyiinae are a subfamily of biting midges. In this subfamily, both anterior and posterior prolegs are present on the larvae. Larvae are both terrestrial and aquatic, and feed primarily on algae and fungi. Some species are important pollinators of tropical crops such as the cocoa bean.
Larvae of species in the Dasyheleinae subfamily are characterized by an anal segment with retractile posterior prolegs. Larvae are aquatic and adults do not feed on vertebrate blood, nor do they prey on other insects. They take nectar only, an unusual feeding behavior within the Ceratopogonidae.
The Ceratopogoninae subfamily has elongated larvae without prolegs or hooks. Most larvae of this subfamily are predatory. Adults generally take vertebrate blood or attack other insects.
Atrichopogon sp. on Oedemera virescens
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