Philhelius citrofasciatus

Philhelius citrofasciatus
	Male
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Syrphidae
Genus:	Philhelius
Species:	P. citrofasciatus
Binomial name
	Philhelius citrofasciatus; (De Geer, 1776)
Synonyms
	Musca citrofasciata De Geer, 1776; Xanthogramma citrofasciatum (De Geer, 1776);

Philhelius citrofasciatus is a species of hoverfly found in grasslands from Ireland to western Siberia. The larvae live in Lasius ant colonies where they feed on the aphids tended by the ants.^[1]^[2] Prior to 2018, it was known under the genus name Xanthogramma, a junior synonym.^[3]

Description

External images For terms see Morphology of Diptera
Wing length 6·5–10·25 mm. Legs yellow coxae and trochanters black. Femora and tibiae 3 completely pale. Yellow marks on tergite 2 linear (not equilateral triangles). Tergites 2–4 with subequal yellow marks. See references for determination.^[4]^[5]^[6]^[7]

Distribution

Palearctic. South Norway to Iberia. Ireland East through Central Europe and South Europe into European Russia and Yugoslavia and the Caucasus, then to Siberia.^[8]^[9]

References

^ Stubbs, Alan E. & Falk, Steven J. (1983). British Hoverflies: An Illustrated Identification Guide. British Entomological & Natural History Society. pp. 253, xvpp.
^ Speight, M.C.D. (2011). "Species accounts of European Syrphidae (Diptera)" (PDF). Syrph the Net, the Database of European Syrphidae. 65: 285pp.
^ Evenhuis NL. Nomenclatural studies toward a World List of Diptera genus-group names. Part VI: Daniel William Coquillett. Zootaxa. 2018 Feb 18;4381(1):1-95. doi: 10.11646/zootaxa.4381.1.1. PMID: 29689947
^ Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendum
^ 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.
^ 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.
^ Coe, R.L. (1953) Diptera: Syrphidae. Handbks.ident.Br.insects, 10(1): 1-98. R.ent.Soc.London. pdf
^ Fauna Europaea
^ Peck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.

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[1] Stubbs, Alan E. & Falk, Steven J. (1983). British Hoverflies: An Illustrated Identification Guide. British Entomological & Natural History Society. pp. 253, xvpp.

[Speight-2] Speight, M.C.D. (2011). "Species accounts of European Syrphidae (Diptera)" (PDF). Syrph the Net, the Database of European Syrphidae. 65: 285pp.

[3] Evenhuis NL. Nomenclatural studies toward a World List of Diptera genus-group names. Part VI: Daniel William Coquillett. Zootaxa. 2018 Feb 18;4381(1):1-95. doi: 10.11646/zootaxa.4381.1.1. PMID: 29689947

[4] Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendum

[5] 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.

[6] 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.

[7] Coe, R.L. (1953) Diptera: Syrphidae. Handbks.ident.Br.insects, 10(1): 1-98. R.ent.Soc.London. pdf

[8] Fauna Europaea

[9] Peck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.

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