Chrysogaster virescens explained

Chrysogaster virescens is a European species of hoverfly.^[1]

Description

External images For terms see Morphology of Diptera

Wing length 5·75-6·75 mm.Antennae partly red. Face twice as wide as maximum width of an eye. Wings at most tinged brown on anterior part. Pleurae not pruinose. Male face with central knob small.^{[2] [3] [4] [5]} The male genitalia are figured by Maibach, A. & Goeldlin de Tiefenau (1994) .^[6]

Distribution

South Finland, Ireland, Britain and the Atlantic seaboard of Europe from Denmark to the Pyrenees and northern Spain. Also in Switzerland in Central Europe.^{[7] [8]}

Biology

Habitat: Woodland and wetland; fen carr, areas with flushes and streams in deciduous forest. Alnus Salix carr and poorly-drained scrub, streamsides in woodland. Flowers visited include white umbellifers, Filipendula, Ilex, Iris, Ranunculus. The flight period is end of April to mid July.^{[9] [10]}

Notes and References

1. Book: Stubbs, Alan E. . Falk, Steven J.. 1983 . British Hoverflies: An Illustrated Identification Guide . British Entomological & Natural History Society. 0-9502891-3-2. 2nd (revised). 253, xvpp .
2. Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendum
3. 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.
4. Bei-Bienko, G.Y. & Steyskal, G.C. (1988) Keys to the Insects of the European Part of the USSR, Volume V: Diptera and Siphonaptera, Part I. Amerind Publishing Co., New Delhi. .
5. Coe, R.L. (1953) Diptera: Syrphidae. Handbks.ident.Br.insects, 10(1): 1-98. R.ent.Soc.London. pdf
6. Maibach, A. & Goeldlin de Tiefenau, P. (1994) Limites génériques et caractéristiques taxonomiques de plusieurs genres de la Tribu des Chrysogasterini (Diptera: Syrphidae) III. Descriptions des stades immatures de plusieurs espèces ouest-paléarctiques. Rev.suisse Zool., 101: 369-411.
7. [Fauna Europaea]
8. Peck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.
9. de Buck, N. (1990) Bloembezoek en bestuivingsecologie van Zweefvliegen (Diptera, Syrphidae) in het bijzonder voor België. Doc.Trav. IRSNB, no.60, 1-167.
10. Speight . M.C.D. . 2011 . Species accounts of European Syrphidae (Diptera). Syrph the Net, the database of European Syrphidae . 65 . 285pp .