Checklist of Diptera of the Czech Republic and Slovakia
electronic version 2, 2009
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Rhagionidae Latreille, 1802

Rudolf Rozkošný

Department of Botany and Zoology, Faculty of Science, Masaryk University, CZ-61137 Brno, Czech Republic;

Rhagionidae are small to large, slender flies, with a body length from 2.0 to 20.0 mm. Body colour yellowish to dark, often with a yellow pattern. Males usually holoptic and females dichoptic, antennal flagellum compact, with a subapical style or arista, rounded, onion-shaped or reniform. Wing venation indicating a relationship to other Tabanomorpha; infumations or dark markings on wings not rare. Legs slender, with spurs on mid and hind tibiae. Larval head capsule slender, mostly retracted within thorax; creeping welts distinct on abdominal segments; respiratory system amphipneustic, with posterior spiracles surrounded by four lobes of anal segment. The larvae live in damp soil rich in decaying organic matter, but some species prefer rotten wood, mosses and mud at the edge of running water. The larvae are mostly predaceous, but some are also saprophagous whilst those of Spania are leaf-miners in liverworts. The adults are predaceous; species of Rhagio are often found sitting on the trunks of solitary trees with the head directed downwards.

92 species in seven genera are known in Europe (Majer 2007). 27 species are included in this checklist, with 24 in the Czech Republic (24 in Bohemia and 23 in Moravia) and 26 in Slovakia. No additional species have been recorded since the PCV2 (Rozkošný & Spitzer 1997) but one omitted species is added here.

The characteristics of the family have been given by Majer (1997). The Central European species may be identified using the key by Rozkošný and Spitzer (1965), whilst faunistic data from the Czech Republic were summarised by Spitzer and Barták (2000). Nomenclature follows the the Fauna Europaea (Majer 2007).

For financial support, the Ministry of Education of the Czech Republic and the Masaryk University (grant No. MSM 0021622416)are acknowledged.


[1] Chandler P. 1998: Rhagionidae. In Chandler P. (ed.): Checklists of Insects of the British Isles (New Series). Part 1. Diptera (Incorporating a List of Irish Diptera). Handbooks for the Identification of  British Insects, Vol. 12. Royal Entomological Society, London, pp. 71-72.

[2] Lichtwardt B. 1905: Diptrerologische Bemerkungen. Zeitschrift für systematische Hymenopterologie and Dipterologie 5: 309-311.

[3] Majer J.M. 1997: Family Rhagionidae. In Papp L. & Darvas B. (eds): Contributions to a Manual of Palaearctic Diptera (with special reference to flies of economic importance). Vol. 2. Nematocera and Lower Brachycera. Science Herald, Budapest, pp. 433-438.

[4] Majer J.M. 2007: Fauna Europaea: Rhagionidae. In Pape T. (ed.): Fauna Europaea: Diptera, Brachycera. Fauna Europaea Version 1.3. <>. Retrieved 07.08.2009.

[5] Rozkošný R. & Spitzer K. 1965: Schnepfenfliegen (Diptera, Rhagionidae) in der Tschechoslowakei. Acta entomologica bohemoslovaca 62: 340-368.

[6] Rozkošný R. & Spitzer K. 1997: Rhagionidae. In Chvála M. (ed.): Check List of Diptera (Insecta) of the Czech and Slovak Republics. Karolinum Charles University Press, Prague, p. 43.

[7] Spitzer K. & Barták M. 2000: Rhagionidae. In Barták M. & Vaňhara J. (eds): Diptera in an industrially affected region (North-Western Bohemia, Bílina and Duchcov environs) I. Folia Facultatis Scientiarum Naturalium Universitatis Masarykianae Brunensis, Biologia 104: 129-131.

Chrysopilus Macquart, 1826
asiliformis (Preyssler, 1791)  CZ (B M ) SK
cristatus (Fabricius, 1775)  CZ (B M ) SK in PCV2 and ECV1as C. auratus (Fabricius, 1805) [1]
erythrophthalmus Loew, 1840  CZ (B M ) SK
helvolus (Meigen, 1820)  CZ (B M ) SK
luteolus (Fallén, 1814)  CZ (B M ) SK
nubecula (Fallén, 1814)  CZ (B M ) SK
pullus Loew, 1869  CZ (B ) SK
splendidus (Meigen, 1820)  CZ (B M ) SK
Rhagio Fabricius, 1775
annulatus (De Geer, 1776)  CZ (B M ) SK
cingulatus (Loew, 1856)  SK
conspicuous Meigen, 1804  CZ (B M ) SK
immaculatus Meigen, 1804  CZ (B M ) SK
latipennis (Loew, 1856)  CZ (B M ) SK
lineola Fabricius, 1794  CZ (B M ) SK
maculatus (De Geer, 1776)  CZ (B M ) SK
notatus (Meigen, 1820)  CZ (B M ) SK
scolopaceus (Linnaeus, 1758)  CZ (B M ) SK
strigosus Meigen, 1804  CZ (B M ) SK
tringarius (Linnaeus, 1758)  CZ (B M ) SK
vitripennis (Meigen, 1820)  CZ (B M ) SK
Symphoromyia Frauenfeld, 1867
crassicornis (Panzer, 1806)  CZ (B M ) SK
immaculata (Meigen, 1804)  CZ (B M )
melaena (Meigen, 1820)  CZ (B M ) SK
Ptiolina Zetterstedt, 1842
cinereofasciata Schummel, 1837 SK omitted in ECV1
obscura (Fallén, 1814)  CZ (B M ) SK
paradoxa Jennicke, 1866  SK
Spania Meigen, 1830
nigra Meigen, 1830  CZ (B M ) SK