Thaumaleidae, the solitary midges or trickle midges, are a group of nematoceran flies related to the Ceratopogonidae, Chironomidae, and the Simuliidae. They are small, stocky, yellow to brown flies (3–4 mm). Very few species are known for this family. Larvae are found in films on rocks and the nonfeeding adults are usually found on foliage along the same streams in which the larvae are found. A few solitary midges are found in the Southern Hemisphere, but Thaumaleidae are generally an Holarctic family.
The Chamaemyiidae are a small family of acalyptrate flies with less than 200 species described worldwide. The larvae of these small flies are active and predatory and are often used for biological control of aphids, scale insects, and similar pests. Chamaemyiid fossils are poorly represented in amber deposits, but a few examples are known from the Eocene epoch onwards.
The Coelopidae or kelp flies are a family of Acalyptratae flies, they are sometimes also called seaweed flies, though both terms are used for a number of seashore Diptera. Fewer than 40 species occur worldwide. The family is found in temperate areas, with species occurring in the southern Afrotropical, Holarctic, and Australasian regions.
The Celyphidae, commonly known as beetle flies or beetle-backed flies, are a family of flies. About 115 species in about 9 genera are known chiefly from the Oriental and Afrotropic biogeographic regions with one lineage in the New World.
Simulium is a genus of black flies, which may transmit diseases such as onchocerciasis. It is a large genus with several hundred species, and 41 subgenera.
The Pyrgotidae are an unusual family of flies (Diptera), one of only two families of Cyclorrhapha that lack ocelli. Most species are "picture-winged", as is typical among the Tephritoidea, but unlike other tephritoids, they are endoparasitoids; the females pursue scarab beetles in flight, laying an egg on the beetle's back under the elytra where the beetle cannot reach it. The egg hatches and the fly larva enters the body cavity of the beetle, feeding and eventually killing the host before pupating. In the United States, some species of Pyrgota and Sphecomyiella can be quite common in areas where their host beetles are abundant. Like their host beetles, these flies are primarily nocturnal, and are often attracted to artificial lights.
Prosimuliini is a tribe of black flies. It contains over 140 living species, with more than a half of them in the genus Prosimulium. There are 6 living genera, and 2 genera that are only known from Cretaceous fossils.
The Parasimuliinae are a subfamily of Simuliidae containing only one genus and four species. Most species are rare, and some are cave dwellers, in western North America.
Austrosimulium is a genus of 31 species of black flies that are distributed in Australia and New Zealand. There are 2 subgenera: Austrosimulium whose species are principally from New Zealand, and Novaustrosimulium which are exclusively Australian. Austrosimulium is a sister genus to the monospecific Paraustrosimulium of South America.
Chironomini is a tribe of midges in the non-biting midge family (Chironomidae).
Homoneura is a genus of small flies of the family Lauxaniidae.
Sphegina is a genus of small, slender hoverflies. They are widespread throughout Eurasia and North America. In flight they seem to have long hind legs which they often carry hanging down, making them resemble sphecid or ichneumonid wasps. Adult Sphegina are usually found in damp and shady habitats close to water in forested areas, and several species can often be found together. They often feed on white and yellow flowers of Apiaceae, Ranunculaceae, Asteraceae, and Rosaceae like Crataegus, Sorbus, and Sorbaria. Larvae nest in the sap of living and dead trees or in decaying cambium under tree bark lying in water or other damp conditions. The larvae of some species have been discovered in the tunnels of other xylophagous insects.
The Helosciomyzidae are a small family of flies - 9 genera and 22 species. All are known from the Southern Hemisphere. With the exception of the South American genus Sciogriphoneura, the family occurs in Australia, New Zealand. Little is known of their biology.
Periscelididae is a family of flies.
Pherbellia is a genus of flies in the family Sciomyzidae, the marsh flies or snail-killing flies. They occur throughout the world, except for the Subantarctic region.
Novaustrosimulium is a subgenus of Austrosimulium, a genus made up of black flies. The flies in this subgenus are found exclusively in Australia.
Rachispoda is a genus of flies belonging to the family Lesser Dung flies.
Pterogramma is a genus of flies belonging to the family of the Lesser Dung flies.
Stegopterna is a genus of black flies. There are about 15 described species in Stegopterna.
Coelopinae is a subfamily of kelp flies in the family Coelopidae.
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