The Brachyceran infraorder Tabanomorpha is a small group that consists primarily of two large families, the Tabanidae and Rhagionidae, and an assortment of very small affiliated families, most of which have been included within the Rhagionidae.
The Brachyceran family Vermileonidae is a small family of uncertain affinities and unusual biology. It includes fewer than 80 described species, most of them rare and with restricted distribution, in 10 genera. Historically the vermileonids had been regarded as belonging to the family Rhagionidae, possibly in a subfamily Vermileoninae. Their biology and morphology are so markedly distinct from the main Rhagionidae sensu stricto however, that the placement as a separate family has been widely accepted.
Arambourgiania is an extinct genus of azhdarchid pterosaur from the Late Cretaceous period of Jordan, and possibly the United States. Arambourgiania was among the largest members of its family, the Azhdarchidae, and it is also one of the largest flying animals ever known. The incomplete left ulna of the "Sidi Chennane azhdarchid" from Morocco may have also belonged to Arambourgiania.
Chrysopilus is common, worldwide genus of predatory snipe flies. There are approximately 300 species in the genus, including fossil members that are sometimes found in amber.
Rhagionidae or snipe flies are a small family of flies. They get their name from the similarity of their often prominent proboscis that looks like the beak of a snipe.
Rhagio is a worldwide genus of predatory snipe flies. Several species in this genus are referred to as downlooker or down-looker flies because they sometimes perch on tree trunks in a head-down position. There are approximately 170 species. They can be distinguished from other rhagionids by the open anal cell on the wings and the lack of a kidney-shaped arista.
Ptiolina is a genus of snipe flies of the family Rhagionidae,. Examples are found in Northwest Europe, where it prefers woodlands areas. and North America
Stygiocaris is a genus of shrimp from caves in the North West Cape and Barrow Island, Western Australia.
Spania is a genus of snipe flies of the family Rhagionidae.
Litoleptis is a genus of snipe flies of the family Rhagionidae.
Austroleptis is a genus of snipe flies, and the sole genus in the family Austroleptidae; until 2010, it was placed in the family Rhagionidae. They are small to moderately sized flies of around 3 to 7.7 mm.
Bolbomyia is a genus of snipe flies, and the sole genus in the family Bolbomyiidae; until 2010, it was placed in the family Rhagionidae. They are a small 2 to 3.5 mm, brown or black in color, with lightly infuscate (darkened) wings. They are restricted to the north temperate region of North America and Russian Far East (Kamchatka).
Alloleptis is a genus of snipe fly of the family Rhagionidae. It is a small fly of about 4 mm and only known from Sulawesi. It currently contains only one species, Alloleptis tersus.
Arthroceras is a genus of snipe fly of the family Rhagionidae. Arthroceras are mid-sized to large 4.5 to 13 millimetres, black, grey, or yellowish-colored flies that have a fairly long, tapering antenna consisting of 5–8 flagellomeres. Within Rhagonidae, the genus is sometimes(?) placed in the subfamily Arthrocerinae, in which it is the only genus.
Arthroteles is a genus of snipe fly of the family Rhagionidae. Species of Arthroteles are moderately sized, from 5 to 7.5 mm. They are gray to dark gray in colour. Their antenna bears seven to eight tapering flagellomeres, the first much larger than all others.
Desmomyia is a genus of snipe flies of the family Rhagionidae. They have the antennal scape elongated, longer than the pedicel, and the male hind first tarsomere enlarged. Desmomyia are mid-sized flies of about 5 to 7 mm and of grey, black, or brownish colour and the legs have some yellow or dark brown to black.
Omphalophora is a genus of snipe flies of the family Rhagionidae. They are delicate to fairly robust flies, from 3 to 10 mm. they are entirely black or brown in colour.
Schizella is a genus of snipe flies of the family Rhagionidae. They are delicate flies from 3.7 to 6.3 mm, with long, thin legs, and the thorax is brown to orange-brown with blue, purple, or golden-coloured setae.
Pelecorhynchidae is a small family of flies. All of the genera were originally placed in the family Rhagionidae, and their elevation to family rank has been controversial. Other phylogenetic analyses have supported Pelecorhynchidae as a distinct clade from Rhagionidae. The adults of Pelecorhynchus mostly feed on nectar of Leptospermum flowers. Larvae have been collected in the damp margins of swamp areas, where they feed on earthworms.
The family Nothybidae contains only the genus Nothybus, a group of colorful and elongated flies. The family has been recently revised.
