Eristalinus aeneus
Description
Description
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*For terms see [Morphology of Diptera](/wiki/Morphology_of_Diptera "Morphology of Diptera")*

The wing length is 6\.5–9\.25 mm. The eyes are patterned with obvious black spots. Tergites 2 and 3 are completely shiny. The thoracic dorsum has faint greyish stripes (in Southern Europe it has five strong grey stripes). In males the eyes meet on the frons. In females the eyes are bare on the lower half. The hind tibiae have a black ring after middle, and all tarsi with segments 2–4 darkened.Van Veen, M. (2004\) *Hoverflies of Northwest Europe: identification keys to the Syrphidae.* 256 pages. KNNV Publishing, Utrecht.[addendum](http://home.hccnet.nl/mp.van.veen/syrphidae/boekhoverflies.html)Van der Goot, V.S. (1981\) *De zweefvliegen van Noordwest – Europa en Europees Rusland, in het bijzonder van de Benelux*. KNNV, Uitgave no. 32: 275 pages. Amsterdam.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. .Coe, R.L. (1953\) [Diptera: Syrphidae.](http://www.royensoc.co.uk/sites/default/files/Vol10_Part01.pdf)  *Handbks.ident.Br.insects*, 10(1\): 1–98\. R.ent.Soc.London.
The male genitalia are figured by Pérez\-Bañón et al (2003\).Pérez\-Bañón, C.; Rojo, S.; Ståhls, G. \& Marcos\-García, Mª A. (2003\) Taxonomy of European *Eristalinus* (Diptera: Syrphidae) based on larval morphology and molecular data. *Eur.J.Entomol.*, 100: 417–428\. The larva is figured by Hartley (1961\).Hartley, J.C. (1961\) A taxonomic account of the larvae of some British Syrphidae. *Proc.zool.Soc.Lond*.,136: 505–573\.


What is the main argument of Van Veen's book?