Johan Wilhelm Zetterstedt (20 May 1785 – 23 December 1874) was a Swedish naturalist who worked mainly on Diptera and Hymenoptera.
Zetterstedt studied at the University of Lund, where he was a pupil of Anders Jahan Retzius. He received the title of professor in 1822 and succeeded Carl Adolph Agardh as professor of botany and practical economy in 1836, retiring as emeritus in 1853. In 1831, he was elected a member of the Royal Swedish Academy of Sciences.
He is best known as an entomologist. His collections of Scandinavian, Lapland and world Diptera and Orthoptera are in the Zoological Museum of the University of Lund. His students include Anders Gustaf Dahlbom.
Terellia colon is a species of tephritid or fruit flies in the genus Terellia of the family Tephritidae.
Scellus is a genus of flies in the family Dolichopodidae.
Brachyopa is a Holarctic genus of hoverflies whose grey and brown colouration is unusual for this family and these flies can easily be overlooked amongst members of other fly families. The larvae can be found under the bark of dead branches and trees in decaying sap.
Dipterologiae Italicae prodromus is a fundamental work of systematic entomology by the Italian entomologist Camillo Róndani. It consist of seven volumes published in Paris, Parma, Firenze (Ex Tipographia A. Stocchii between 1856 and 1877. It is written in Latin. The subject is the Diptera of Italy.
Eupachygaster is a genus of flies in the family Stratiomyidae.
Blepharomyia piliceps is a species of fly in the family Tachinidae.
Xylota tarda is a Palearctic species of hoverfly.
Oscar Ringdahl (1885–1966) was a Swedish entomologist who specialised in Diptera and Trichoptera.
Azelia cilipes is a species of fly in the family Muscidae. It is found in the Palearctic.
Norrbomia is a genus of flies belonging to the family Lesser Dung flies.
Coproica is a genus of flies belonging to the family Lesser Dung flies.
Gigalimosina is a genus of flies belonging to the family Lesser Dung flies.
Pullimosina is a genus of flies in the family Sphaeroceridae, the lesser dung flies.
Spelobia clunipes is a species of fly belonging to the family of the lesser dung flies.
Argyra ilonae is a species of fly in the family Dolichopodidae. It is found in the Palearctic.
Microsania is a genus of flat-footed flies in the family Platypezidae.
Rocetelion is a genus of flies belonging to the family Keroplatidae.
Pollenia amentaria is a species of cluster fly in the family Polleniidae.
Brachyopa vittata is a European species of hoverfly.
Ortalischema is a genus of flies in the family Sepsidae.