Betasyrphus

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Panorpida
Cladus: Antliophora
Ordo: Diptera
Subordo: Brachycera
Infraordo: Muscomorpha
Sectio: Aschiza
Superfamilia: Syrphoidea

Familia: Syrphidae
Subfamilia: Syrphinae
Tribus: Syrphini
Genus: Betasyrphus
Species: B. keiseri
...
References

Ssymank, A. 2010: Review of the species of Betasyrphus Matsumura, 1917 (Diptera: Syrphidae) from Madagascar with description of a new species. Zootaxa, 2417: 40–50. Preview

Betasyrphus is a genus of hoverfly.[2][3]
Species

B. adligatus (Wiedemann, 1824)[1]
B. cinereomaculatus (Hull, 1937)[1]
B. claripennis (Loew, 1858)[1]
B. eutaeniatus (Bezzi, 1915)[1]
B. hirticeps (Loew, 1858)[1]
B. inflaticornis (Bezzi, 1915)[1]
B. intersectus (Wiedemann, 1824)[1]
B. luci (Curran, 1938)[1]
B. saundersi (Goot, 1964)[1]
B. serarius (Wiedemann, 1830)[1]
B. stuckenbergi (Keiser, 1971)[1][4]

References

Smith, Kenneth G.V.; Vockeroth, J.R. (1980). Crosskey, R.W. (ed.). Catalogue of the Diptera of the Afrotropical Region (Print). London: British museum (Natural History). pp. 1–1436. ISBN 0565 00821 8.
Ssymank, Axel (2010). "Review of the species of Betasyrphus Matsumura, 1917 (Diptera: Syrphidae) from Madagascar with description of a new species" (PDF). Zootaxa. Magnolia Press. 2417: 40–50 40–50. ISSN 1175-5334. Retrieved 2011-02-20.
Mazanek, L.; Laska P.; Bicik V.; Dusek J.; Novonty R. (1999). "Descriptions of puparia of Afrotropic species of Betasyrphus Matsumura (Diptera, Syrphidae)" (PDF). Acta Universitatis Palackianae Olomucensis Facultas Rerum Naturalium Biologica. 37: 89–98. Archived from the original (PDF) on 2011-07-18.
Keiser, F. (1971). "Syrphidae von Madagaskar (Dipt.)". Verhandlungen der Naturforschenden Gesellschaft in Basal. ngib. 81: 223–318.