The Ditomyiidae are a small (90 species) family of flies (Diptera).They are found worldwide (except in the Afrotropical Region), most species are found in the Australasian and Neotropical realms.Matile Family Ditomyiidae. There are only two genera in Europe Ditomyia Winnertz, 1846 and Symmerus Walker, 1848 .Øivind Gammelmo & Eirik Rindal, 2006 On the family Ditomyiidae (Diptera, Sciaroidea) in Norway Norw. J. Entomol. 53, 47-49, 22 May 2006 pdfFauna Europaea Ditomyia is found in Central Europe Symmerus in Northern Europe Symmerus is endemic to the Palaearctic.Munroe, D.D. 1974. The systematics, phylogeny, and zoogeography of Symmerus Walker and Australosymmerus Freeman (Diptera: Mycetophilidae: Ditomyiinae). Mem. entomol. soc.Can. 92. 1 – 183. Ottawa
Genera Asioditomyia Saigusa, 1973 Australosymmerus (Freeman, 1951) Ditomyia Winnertz, 1846 Neocrionisca Papavero, 1977 Nervijuncta Marshall, 1896 Rhipidita Edwards, 1940 Symmerus Walker, 1848 Burmasymmerus Burmese amber, Myanmar, Late Cretaceous (Cenomanian)
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