Checklist of Diptera of the Czech Republic and Slovakia
electronic version 2, 2009
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Sepsidae Walker, 1833

Miroslav Barták

Czech University of Life Sciences, Faculty of Agrobiology, Food and Natural Resources, Department of Zoology and Fisheries,
CZ-165 21 Praha 6 – Suchdol, Czech Republic;

Small to medium-sized flies (body length 2.0-7.0 mm). Head rounded to slightly elongate, antennal arista bare, diverging postvertical setae always present as well as inner vertical and ocellar setae. Vibrissae absent, but strong peristomal setae may be present, palpi nearly always minute. Thorax elongate; arrangement of thoracic bristles and extent of microtomentose parts are useful taxonomic characters. Metathoracic spiracle with one to several setae along posterior and lower margin. Fore legs, especially in males, often with peculiar armature consisting of strong bristles, tubercles, and emarginations, hind tibia often with an osmeterium. Wing clear or with a smoky tip, often with a dark spot near tip or with a somewhat milky-white tip. Costa unbroken, subcosta complete, anal vein short and ending well before wing margin. Abdomen usually narrowed at base, giving rise to the ant-like appearance of the flies. Male ventrites often modified; epandrium large, shape of surstyli species-specific. Female ovipositor short, cerci short, two spermathecae. For further details on the adult morphology, see Pont and Meier (2002). The eggs are oval, with long respiratory horns. The larva is white or yellowish-white, maggot-like, cylindrical, with a somewhat bulbous posterior end. The larvae are saprophagous, coprophagous or necrophagous. The food of the larval Sepsidae includes a wide range of decaying organic materials, excrements of mammals and birds, dead snails, carrion and rotting fungi. For further details on the larvae, see Meier (1996), and Ozerov and Meier (1995).

Altogether 44 species are known to occur in Europe (Pont & Meier 2002); 31 are listed in the present checklist; 30 in the Czech Republic (29 in Bohemia, 23 in Moravia), and 27 in Slovakia. Since the ECV1, the number of species has increased by two in the Czech Republic (both in Bohemia) and by one in Slovakia (Preisler & Barták 2007, Barták 2009, Barták & Roháček 2009). The species-richness of the sepsid fauna is moderately well known in both the Czech Republic and Slovakia.

The basic characteristics of the family have been given by Pont and Meier (2002). All the Central European species may be identified using the keys and figures in that monograph. The nomenclature of the Fauna Europaea (Meier 2007) is used in the present checklist.

This paper was partly supported by IRP MSM 6046070901 (Ministry of education, youth and sports).


[1] Barták M. 2001a: The first record of Sepsis luteipes Melander & Spuler in the Czech Republic. Acta Universitatis Carolinae, Biologica 45: 5-8.

[2] Barták M. 2001b: Sepsidae. In Barták M. & Vaňhara J. (eds): Diptera in an Industrially Affected Region (North Western Bohemia, Bílina and Duchcov Environs) II. Folia Facultatis Scientiarum Naturalium Universitatis Masarykianae Brunensis, Biologia 105: 331-336.

[3] Barták M. 2006: Faunistic records from the Czech republic (Diptera, Sepsidae). Entomofauna carpathica 18: 81.

[4] Barták M. 2009: New record of Sepsidae (Diptera) from the Czech Republic. Folia faunistica Slovaca 14: 39.

[4] Barták M. & Roháček J. 2009: Sepsidae. In Roháček J. & Ševčík J. (eds): Diptera of the Poľana Protected Landscape Area – Biosphere Reserve (Central Slovakia). SNC SR, Administration of the PLA – BR Poľana, Zvolen, pp. 215-217.

[6] Meier R. 1996: Larval morphology of the Sepsidae (Diptera: Sciomyzoidea), with a cladistic analysis using adult and larval characters. Bulletin of the American Museum of Natural History 228: 1-147.

[7] Meier R. 2007: Fauna Europaea: Sepsidae. In Pape T. (ed.): Fauna Europaea: Diptera, Brachycera. Fauna Europaea version 1.3. <>. Retrieved 30.06.2009.

[8] Ozerov A.L. & Meier R. 1995: A key to the larvae of the Palaearctic genera of the Sepsidae (Diptera: Cyclorrhapha). Annales de la  Société Entomologique de France (N.S.) 31: 259-283.

[9] Pont A.C. & Meier R. 2002: The Sepsidae (Diptera) of Europe. Fauna Entomologica Scandinavica, Vol. 37. 220 pp.

[10] Preisler J. & Barták M. 2007: Faunistic records, Diptera: Sepsidae. In Stloukalová V. (ed.): Dipterologica bohemoslovaca, Vol. 14.  Acta Zoologica Universitatis Comenianae 47: 255-256.

Meroplius Rondani, 1874
fukuharai Iwasa, 1984 CZ (B ) SK in ECV1 in genus Xenosepsis [7]
minutus (Wiedemann, 1830)  CZ (B M ) SK
Nemopoda Robineau-Desvoidy, 1830
nitidula (Fallén, 1820)  CZ (B M ) SK
pectinulata Loew, 1873  CZ (B M ) SK
speiseri (Duda, 1926)  CZ (B M ) SK record fom B erroneously omitted in ECV1
Saltella Robineau-Desvoidy, 1830
nigripes Robineau-Desvoidy, 1830  CZ (B ) SK
sphondylii (Schrank, 1803)  CZ (B M ) SK
Sepsis Fallén, 1810
barbata Becker, 1907 CZ (B ) SK
biflexuosa Strobl, 1893  CZ (B M ) SK
cynipsea (Linnaeus, 1758)  CZ (B M ) SK
duplicata Haliday, 1838  CZ (B M ) SK
fissa Becker, 1903 SK
flavimana Meigen, 1826  CZ (B M ) SK
fulgens Hoffmannsegg in Meigen, 1826  CZ (B M ) SK
luteipes Melander & Spuler, 1917 CZ (B ) SK
neocynipsea Melander & Spuler, 1917  CZ ( M ) SK
nigripes  Meigen, 1826 CZ (B )
orthocnemis Frey, 1908  CZ (B M ) SK
pseudomonostigma Ursu, 1969  CZ (B M )
punctum (Fabricius, 1794)  CZ (B M ) SK
thoracica (Robineau-Desvoidy, 1830)  CZ (B M ) SK
violacea Meigen, 1826  CZ (B M ) SK
Themira Robineau-Desvoidy, 1830
annulipes (Meigen, 1826)  CZ (B M ) SK
biloba Andersson, 1975  CZ (B )
gracilis (Zetterstedt, 1847) CZ (B ) SK
leachi (Meigen, 1826)  CZ (B M ) SK
lucida (Staeger, 1844)  CZ (B M ) SK
minor (Haliday, 1833)  CZ (B M ) SK
nigricornis (Meigen, 1826)  CZ (B M ) SK
putris (Linnaeus, 1758)  CZ (B M ) SK
superba (Haliday, 1833)  CZ (B M )