Dasysyrphus

Dasysyrphus is a genus of hover flies with 50 identified species distributed worldwide (see distribution map). While the genus is relatively easy to identify, genera key [1] the differences between species have a more narrow range of variations. Therefore, identification of species by images of specimens alone should be made with care. (See available keys below)

Dasysyrphus
Dasysyrphus albostriatus female
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Syrphidae
Subfamily: Syrphinae
Tribe: Syrphini
Genus: Dasysyrphus
Enderlein, 1938
Synonyms
  • Conosyrphus Matsumura, 1918
  • Dendrosyrphus Dusek & Láska, 1967
  • Syrphella Goffe, 1944

Larvae

The known larvae are mostly tree dwelling on both conifers and deciduous trees. They feed on aphids and other small Hemiptera resting in the daytime. This nocturnal habit, plus the camouflage coloration of the larvae may account for the lack of larval reports for this genus.[2][3]

Description

for taxonomic terms see Thompson or Speight
These are medium-sized flies with a combination of characters: the margin of the abdomen grooved and dark with light spots present on tergites 2,3 and 4, haired eyes microtrichose wings (at least anterior third) with a elongate stigma, third vein ending at the apex of the wing, calypter with ventral lobe bare and a bare metasternum.[1]

Dasysyrphus wing
abdominal spots

Resources for identification to species
  • Bartsch et al. (2009) for Nordic countries,[4]
  • Barkalov (2007) for Urals, Siberia and the Far East.[5]
  • van Veen (2004) for Northwestern Europe [6]
  • Van der Goot,V.S. (1981) Russia[7]
  • Stubbs & Falk (1983) for Britain [8]
  • Ghorpade (1994) for India (Ghorpade, 1994) [9]
  • Peck(1974) for the Palaearctic[10]
  • Locke 2013 Nearctic key nearctic species key [11]

Species

References
  1. Thompson, F. Christian. (1999). "A key to the genera of the flower flies (Diptera: Syrphidae) of the Neotropical Region including descriptions of new genera and species and a glossary of taxonomic terms used" (PDF). Contributions on Entomology, International. 3 (3): 321–378. Retrieved 8 August 2021.
  2. Rotheray, G.E. (1993). "Colour Guide to Hoverfly Larvae (Diptera, Syrphidae) in Britain and Europe" (PDF). Diperists Digest. 9: 155.
  3. Láska, Pavel; Mazánek, Libor; Vitezslav, Bieik (2013). "Key to adults and larvae of the genera of European Syrphinae" (PDF). Casopis Slezskeho Zemskeho Muzea. 62: 193–206.
  4. Bartsch, Hans (2009). Tvåvingar: Blomflugor : denna volym omfatter samtlinga nordiska arter = Diptera: Syrphidae: Eristalinae & Microdontinae. Uppsala: ArtDatabanken. p. 478. ISBN 9789188506702.
  5. Barkalov A.V. 2007. Hoverflies of the genus Dasysyrphus ENDERLEIN, 1937 (Diptera, Syrphidae) from the Urals, Siberia and the Far East. Eurasian Entomological Journal 6: 273-298.
  6. Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendum
  7. Van der Goot,V.S. (1981) De zweefvliegen van Noordwest - Europa en Europees Rusland, in het bijzonder van de Benelux. KNNV, Uitgave no.32: 275pp. Amsterdam.
  8. Stubbs, Alan E.; Falk, Steven J. (1983). British Hoverflies: An Illustrated Identification Guide. British Entomological & Natural History Society. pp. 253, xvpp.
  9. Ghorpade, K. (1994). "Diagnostic keys to new and known genera and species of Indian subcontinent Syrphini". Colemania Ins. Biosyst. 3: 15 pp.
  10. Peck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.
  11. Locke, Michelle; Skevington, Jeffrey (2013). "Revision of Nearctic Dasysyrphus". Zootaxa. 3660 (1): 1–80. doi:10.11646/zootaxa.3660.1.1. PMID 25333084.
  12. Rabarts, Ian W. (18 Feb 2011). "Dasysyrphus pauxillus (Williston) (Diptera, Syrphidae) new to Britain in Breckland". Dipterists Digest. Second Series. Dipterists Forum. 17 (2): 157–161.
  13. Parker, Mick (2013). "An additional British site for Dasysyrphus pauxillus (Williston) (Diptera, Syrphidae)". Dipterists Digest. Second Series. Dipterists Forum. 20 (2): 119.
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