Syrphus sp. (S. vitripennis or S. torvus), copyright Gail Hampshire.

Belongs within: Syrphoidea.

Syrphus is a genus of hover flies, most diverse in the north temperate regions, whose larvae are predatory on Sternorrhyncha. Adults have a coarse yellow pile on the upper side of the ventral lobe of the calypter. Larvae are brightly coloured with dorsal spurs on the posterior respiratory process (Thompson et al. 2010).

Characters (from Thompson et al. 2010): Postpronotum, anterior anepisternum, metathoracic pleuron, and metasternum bare; calypter with ventral lobe pilose, with long, coarse, erect yellow pile dorsally, especially on posteromedian portion; male abdomen with five unmodified pregential segments, tergum 5 visible in dorsal view. Larva brightly patterned; ventral surface smooth, without setae, prolegs or crochets; anal segment without lappets; posterior respiratory process with dorsal spurs, stem of respiratory process long with spiracles not reaching integument, spiracles dark lined.

|--S. algirus Macquart 1847E12
|--S. arcuatus [=Mulio arcuatus]L02
|--S. bifasciatusK01
|--S. bombylansL02
|--S. caemiteriorumL02
|--S. fuciformisL02
|--S. intricariusL02
|--S. jonesiE66
|--S. knabiT81
|--S. lunigerK01
|--S. menthastriR26
|--S. nemorumL02
|--S. novaezealandiaeT27
|--S. opinatorE66
|--S. pellucensL02
|--S. pendulusL02
|--S. phaeostigmaTRZ10
|--S. pipiensL02
|--S. pyrastriR26
|--S. ribesiiTRZ10
|--S. ruficornisL02
|--S. scriptusL02
|--S. shoraeTRZ10
|--S. torvusM90
|--S. tristisL02
|--S. vitripennisK01
`--S. vittafronsE66

*Type species of generic name indicated


[E66] Evans, H. E. 1966. The Comparative Ethology and Evolution of the Sand Wasps. Harvard University Press: Cambridge (Massachusetts).

[E12] Evenhuis, N. L. 2012. Publication and dating of the Exploration Scientifique de l’Algérie: Histoire Naturelle des Animaux Articulés (1846–1849) by Pierre Hippolyte Lucas. Zootaxa 3448: 1–61.

[K01] Kertész, K. 1901. Legyek [Dipteren]. In: Horváth, G. (ed.) Zichy Jenő Gróf Harmadik Ázsiai Utazása [Dritte Asiatische Forschungsreise des Grafen Eugen Zichy] vol. 2. Zichy Jenő Gróf Harmadik Ázsiai Utazásának Állattani Eredményei [Zoologische Ergebnisse der Dritten Asiatischen Forschungsreise des Grafen Eugen Zichy] pp. 179–201. Victor Hornyánszky: Budapest, and Karl W. Hierseman: Leipzig.

[L02] Latreille, P. A. 1802. Histoire Naturelle, générale et particulière des crustacés et des insectes vol. 3. Familles naturelles des genres. F. Dufart: Paris.

[M90] McAlpine, J. F. 1990. Insecta: Diptera adults. In: Dindal, D. L. (ed.) Soil Biology Guide pp. 1211–1252. John Wiley & Sones: New York.

[R26] Risso, A. 1826. Histoire naturelle des principales productions de l’Europe méridionale et particulièrement de celles des environs de Nice et des Alpes maritimes vol. 5. F.-G. Levrault: Paris.

[T81] Teskey, H. J. 1981. Key to families—larvae. In: McAlpine, J. F., B. V. Peterson, G. E. Shewell, H. J. Teskey, J. R. Vockeroth & D. S. Wood (eds) Manual of Nearctic Diptera vol. 1 pp. 125–147. Research Branch, Agriculture Canada.

[TRZ10] Thompson, E. C., G. E. Rotheray & M. A. Zumbado. 2010. Syrphidae (flower flies). In: Brown, B. V., A. Borkent, J. M. Cumming, D. M. Wood, N. E. Woodley & M. A. Zumbado (eds) Manual of Central American Diptera vol. 2 pp. 763–792. NRC Research Press: Ottawa.

[T27] Thomson, G. M. 1927. The pollination of New Zealand flowers by birds and insects. Transactions and Proceedings of the New Zealand Institute 57: 106–125.

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