TABLE 1. Extant genera of the family Dixidae.

Name Number of species Geographical distribution
Asiodixa Papp et al., 2006 2 Thailand
Dixa Meigen, 1818 106 World-wide except Antarctica
Dixella Dyar & Shannon, 1924 64 World-wide except Antarctica
Meringodixa Nowell, 1951 1 North America
Mesodixa Belkin, Heinemann & Page, 1970 1 Jamaica
Metadixa Peters and Savary, 1994 1 Philippines
Neodixa Tonnoir, 1924 1 New Zealand
Nothodixa Edwards, 1930 10 Australia, Chile & New Zealand

 

TABLE 2. Fossils of the family Dixidae.

Name Age Lithology Formation/Location Reference
Dixidae incertae sedis Oligocene Marl Bouldnor Formation, U. K. Cockerell, 1921
   (Dixa priscula Cockerell, 1921. Nomen dubium)
Dixidae incertae sedis Paleocene/ Eocene Clayey diatomite The Fur Formation, Denmark Ansorge, 1992
   (Dixa cimbrica Ansorge, 1992. Nomen dubium )
Dixa minuta Late Eocene Amber The Baltic region (Europe) Meunier, 1906
Dixa tertiaria Oligocene Marl The d'Aix Formation, France Meunier, 1915; Theobald, 1937
   (Dixa hyalipennis Theobald, 1937)
Dixella distans Late Eocene Amber The Baltic region (Europe) Hennig, 1966
Dixella filiforceps Late Eocene Amber The Baltic region (Europe) Hennig, 1966
Dixella intacta Middle Eocene Oil shale Kishenehn Formation, U.S.A. Greenwalt & Moulton, 2016*
Dixella eomarginata Middle Eocene Oil shale Kishenehn Formation, U.S.A. Greenwalt & Moulton, 2016*
Dixella spinilobata Middle Eocene Oil shale Kishenehn Formation, U.S.A. Greenwalt & Moulton, 2016*
Dixella curvistyla Middle Eocene Oil shale Kishenehn Formation, U.S.A. Greenwalt & Moulton, 2016*
Dixella succinea Late Eocene Amber The Baltic region (Europe) Meunier, 1906
Eucorethrina convexa Late Jurassic Shale The Itat Formation, Siberia Lukashevich, 1996
Eucorethrina flexa Middle Jurassic Shale The Itat Formation, Siberia Kalugina & Kovalev, 1985
Eucorethrina westwoodi Early Cretaceous Shale Durlston & Lulworth Formations, U.K. Lukasevich et al., 2001
?Syndixa liasina Middle Jurrasic Shale Dzhil Formation, Kyrgyzstan Lukashevich, 1996
Syndixa mollis Middle Jurassic Shale The Itat Formation, Siberia Lukashevich, 1996
Syndixa sibirica Early Jurassic Shale The Itat Formation, Siberia Lukashevich, 1996

*This study