Family Sepsidae
Total number of species: 66.
| Genus | Species | Author | No. of specs. or vials in collection | Biogeographic Region |
| Archisepsis | excavata | (Duda, 1926) | Alc. | Neotropical |
| Archisepsis | scabra | (Loew, 1861) | 10 | Neotropical |
| Australosepsis | frontalis | (Walker, 1860) | 29 | Oriental |
| Australosepsis | niveipennis | (Becker, 1903) | 5 | Australasian |
| Australosepsis | niveipennis | (Becker, 1903) | Alc. | Australasian |
| Australosepsis | niveipennis | (Becker, 1903) | 1 | Oriental |
| Decachaetophora | aeneipes | (de Meijere, 1913) | 8 | Oriental |
| Dicranosepsis | bicolor | (Wiedemann, 1830) | 167 | Australasian |
| Dicranosepsis | breviappendiculata | de Meijere, 1913 | 1 | Oriental |
| Dicranosepsis | distincta | Iwasa & Tewari, 1990 | 1 | Oriental |
| Dicranosepsis | pubipes | (Brunetti, 1910) | 4 | Oriental |
| Dicranosepsis | quadrigemina | Iwasa, 1989 | 7 | Oriental |
| Dicranosepsis | revocans | (Walker, 1860) | 4 | Oriental |
| Dicranosepsis | tibialis | Iwasa & Tewari 1991 | 1 | Oriental |
| Dicranosepsis | unipilosa | Duda, 1926 | 2 | Oriental |
| Lasionemopda | hirsuta | (de Meijere, 1906) | Alc. | Australasian |
| Meroplius | minutus | (Wiedemann, 1830) | 15 | Palaearctic (Danish) |
| Meroplius | minutus | (Wiedemann, 1830) | Alc. | Nearctic |
| Meroplius | minutus | (Wiedemann, 1830) | 1 | Palaearctic |
| Microsepsis | armillata | (Melander & Spuler, 1917) | 18 | Neotropical |
| Microsepsis | furcata | (Melander & Spuler, 1917) | 6 | Neotropical |
| Nemopoda | nitidula | (Fallén, 1820) | 258 | Palaearctic (Danish) |
| Nemopoda | nitidula | (Fallén, 1820) | Alc. | Nearctic |
| Nemopoda | nitidula | (Fallén, 1820) | 7 | Palaearctic |
| Nemopoda | nitidula | (Fallén, 1820) | Alc. | Palaearctic |
| Nemopoda | pectinulata | Loew, 1873 | 23 | Palaearctic (Danish) |
| Nemopoda | pectinulata | Loew, 1873 | 2 | Oriental |
| Nemopoda | pectinulata | Loew, 1873 | 4 | Palaearctic |
| Ortalischema | albitarse | (Zetterstedt, 1847) | Alc. | Palaearctic |
| Orygma | luctuosum | Meigen, 1830 | 6 | Palaearctic (Danish) |
| Orygma | luctuosum | Meigen, 1830 | 21 | Nearctic (Greenland) |
| Orygma | luctuosum | Meigen, 1830 | Alc. | Nearctic |
| Orygma | luctuosum | Meigen, 1830 | 4 | Palaearctic |
| Orygma | luctuosum | Meigen, 1830 | Alc. | Palaearctic |
| Palaeosepsis | discolor | (Bigot 1868) | 8 | Neotropical |
| Palaeosepsis | discolor | (Bigot 1868) | Alc. | Neotropical |
| Palaeosepsis | diversiformis | Ozerov, 1993 | 4 | Neotropical |
| Palaeosepsis | diversiformis | Ozerov, 1993 | Alc. | Neotropical |
| Palaeosepsis | ecalcarata | (Thomson, 1869) | 12 | Neotropical |
| Palaeosepsis | maculata | (Duda, 1926) | 1 | Neotropical |
| Palaeosepsis | pusio | (Schiner, 1868) | 16 | Neotropical |
| Palaeosepsis | pusio | (Schiner, 1868) | Alc. | Neotropical |
| Parapalaeosepsis | basifera | (Walker, 1859) | 13 | Australasian |
| Parapalaeosepsis | compressa | Zuska, 1970 | 2 | Australasian |
| Parapalaeosepsis | limbata | (de Meijere, 1906) | 8 | Australasian |
| Parapalaeosepsis | plebeia | (de Meijere, 1906) | Alc. | Australasian |
| Paratoxopoda | amonane | Vanschuytbroeck, 1961 | Alc. | African |
| Perochaeta | hennigi | Ozerov, 1992 | 1 | Oriental |
| Saltella | sphondylii | (Schrank, 1803) | 38 | Palaearctic (Danish) |
| Saltella | sphondylii | (Schrank, 1803) | 1 | Palaearctic |
| Saltella | sphondylii | (Schrank, 1803) | Alc. | Palaearctic |
| Sepsis | biflexuosa | Strobl, 1893 | Alc. | Nearctic |
| Sepsis | biflexuosa | Strobl, 1893 | Alc. | Palaearctic |
| Sepsis | biflexuosa | Strobl, 1893 | 15 | Palaearctic (Danish) |
| Sepsis | coprophila | de Meijere, 1906 | 13 | Oriental |
| Sepsis | cynipsea | (Linnaeus, 1758) | 315 | Palaearctic (Danish) |
| Sepsis | cynipsea | (Linnaeus, 1758) | 4 | Palaearctic |
| Sepsis | cynipsea | (Linnaeus, 1758) | Alc. | Palaearctic |
| Sepsis | dissimilis | Brunetti, 1909 | 19 | Oriental |
| Sepsis | duplicata | Haliday, 1838 | 7 | Palaearctic (Danish) |
| Sepsis | flavimana | Meigen, 1826 | 97 | Palaearctic (Danish) |
| Sepsis | flavimana | Meigen, 1826 | 1 | Palaearctic |
| Sepsis | fulgens | Meigen, 1826 | 313 | Palaearctic (Danish) |
| Sepsis | fulgens | Meigen, 1826 | 25 | Palaearctic |
| Sepsis | fulgens | Meigen, 1826 | Alc. | Palaearctic |
| Sepsis | indica | Wiedemann, 1824 | 7 | Oriental |
| Sepsis | lateralis | Wiedemann, 1830 | 1 | African |
| Sepsis | lateralis | Wiedemann, 1830 | Alc. | African |
| Sepsis | lateralis | Wiedemann, 1830 | 1 | Palaearctic |
| Sepsis | neocynipsea | Melander & Spuler, 1917 | Alc. | Nearctic |
| Sepsis | neocynipsea | Melander & Spuler, 1917 | 1 | Oriental |
| Sepsis | nigripes | Meigen, 1826 | 1 | Palaearctic (Danish) |
| Sepsis | nitens | Wiedemann, 1824 | 9 | Oriental |
| Sepsis | orthocnemis | Frey, 1908 | 88 | Palaearctic (Danish) |
| Sepsis | orthocnemis | Frey, 1908 | 6 | Palaearctic |
| Sepsis | orthocnemis | Frey, 1908 | Alc. | Palaearctic |
| Sepsis | punctum | (Fabricius, 1794) | 63 | Palaearctic (Danish) |
| Sepsis | punctum | (Fabricius, 1794) | 1 | Nearctic |
| Sepsis | punctum | (Fabricius, 1794) | Alc. | Nearctic |
| Sepsis | punctum | (Fabricius, 1794) | 7 | Oriental |
| Sepsis | punctum | (Fabricius, 1794) | 47 | Palaearctic |
| Sepsis | punctum | (Fabricius, 1794) | Alc. | Palaearctic |
| Sepsis | testacea | Walker, 1856 | 28 | Oriental |
| Sepsis | thoracica | Robineau-Desvoidy, 1830 | Alc. | African |
| Sepsis | thoracica | Robineau-Desvoidy, 1830 | 6 | Palaearctic (Danish) |
| Sepsis | thoracica | Robineau-Desvoidy, 1830 | 9 | Palaearctic |
| Sepsis | thoracica | Robineau-Desvoidy, 1830 | Alc. | Palaearctic |
| Sepsis | violacea | Meigen, 1826 | 12 | Palaearctic (Danish) |
| Sepsis | violacea | Meigen, 1826 | 31 | Palaearctic |
| Sepsis | violacea | Meigen, 1826 | Alc. | Palaearctic |
| Themira | annulipes | (Meigen, 1826) | 91 | Palaearctic (Danish) |
| Themira | annulipes | (Meigen, 1826) | 6 | Palaearctic |
| Themira | annulipes | (Meigen, 1826) | Alc. | Palaearctic |
| Themira | arctica | (Becker in Becker et al., 1915) | 4 | Nearctic (Greenland) |
| Themira | biloba | Andersson, 1975 | Alc. | Palaearctic |
| Themira | dampfi | Becker, 1915 | 12 | Palaearctic (Faroe Islands) |
| Themira | flavicoxa | Melander & Spuler, 1917 | Alc. | Nearctic |
| Themira | gracilis | (Zetterstedt, 1847) | 1 | Palaearctic (Danish) |
| Themira | gracilis | (Zetterstedt, 1847) | 4 | Palaearctic |
| Themira | leachi | (Meigen, 1826) | 31 | Palaearctic (Danish) |
| Themira | leachi | (Meigen, 1826) | 2 | Palaearctic |
| Themira | lucida | (Staeger in Schiødte, 1844) | 43 | Palaearctic (Danish) |
| Themira | lucida | (Staeger in Schiødte, 1844) | Alc. | Palaearctic (Danish) |
| Themira | lucida | (Staeger in Schiødte, 1844) | 45 | Palaearctic (Faroe Islands) |
| Themira | lucida | (Staeger in Schiødte, 1844) | Alc. | Palaearctic |
| Themira | malformans | Melander & Spuler, 1917 | 3 | Palaearctic |
| Themira | minor | (Haliday, 1833) | 34 | Palaearctic (Danish) |
| Themira | minor | (Haliday, 1833) | Alc. | Palaearctic |
| Themira | nigricornis | (Meigen, 1826) | 96 | Palaearctic (Danish) |
| Themira | nigricornis | (Meigen, 1826) | Alc. | Palaearctic |
| Themira | pusilla | (Zetterstedt, 1847) | 1 | Palaearctic |
| Themira | putris | (Linnaeus, 1758) | 312 | Palaearctic (Danish) |
| Themira | putris | (Linnaeus, 1758) | 1 | Palaearctic |
| Themira | putris | (Linnaeus, 1758) | Alc. | Palaearctic |
| Themira | superba | (Haliday, 1833) | 28 | Palaearctic (Danish) |
| Toxopoda | simplex | Iwasa 1986 | 1 | Oriental |
| Zuskamira | inexpectata | Pont, 1987 | 1 | Palaearctic |
| Zuskamira | inexpectata | Pont, 1987 | Alc. | Palaearctic |