Eristalinus aeneus

Eristalinus aeneus
male
female
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Diptera
Family:
Syrphidae
Subfamily:
Eristalinae
Tribe:
Eristalini
Genus:
Eristalinus
Subgenus:
Lathyrophthalmus
Species:
E. aeneus
Binomial name
Eristalinus aeneus
(Scopoli, 1763)
Synonyms

Eristalinus aeneus is a species of hoverfly.

Description

External images For terms see 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.[1] [2] [3] [4] The male genitalia are figured by Pérez-Bañón et al (2003) .[5] The larva is figured by Hartley (1961) [6]

Distribution

The distribution of this species is cosmopolitan.[7][8]

Biology
Disused water trough habitat in Portugal

The habitat for this species is freshwater: coastal lagoons, ponds, slow-moving rivers, streams and irrigation ditches. The species is anthropophilic in southern Europe; towards the northern edge of its range there it is confined to coastal sites.[9] The species flies very fast and low over ground vegetation, and feeds on yellow composites and white umbellifers: Aster, Berteroa incana, Cistus, Origanum, Salix repens, Taraxacum.[10] The flight period is April to October. Overwinters as an adult.

In the north the larvae of E. aeneus occur in freshwater seepages and brackish rock pools on the sea coast, but elsewhere they occur in a variety of freshwater habitats, including in association with animal dung and in sewage farms.

References
  1. Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendum
  2. 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.
  3. 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. ISBN 81-205-0080-6.
  4. Coe, R.L. (1953) Diptera: Syrphidae. Handbks.ident.Br.insects, 10(1): 1-98. R.ent.Soc.London. pdf
  5. 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.
  6. Hartley, J.C. (1961) A taxonomic account of the larvae of some British Syrphidae. Proc.zool.Soc.Lond.,136: 505-573.
  7. Fauna Europaea
  8. Peck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230.
  9. Speight, M.C.D. (2011). "Species accounts of European Syrphidae (Diptera)" (PDF). Syrph the Net, the database of European Syrphidae. 65: 285pp.
  10. de Buck, N. (1990) Bloembezoek en bestuivingsecologie van Zweefvliegen (Diptera, Syrphidae) in hetbijzonder voor België. Doc.Trav. IRSNB, no.60, 1-167.


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