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TaxonomyBrowse
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Genus Sphaerophoria

Syrphid Fly  - Sphaerophoria contigua - male Hoverflies - Sphaerophoria - male - female Syrphid Fly - Sphaerophoria Sphaerophoria  ? - Sphaerophoria Syrphid fly? Beautiful bee mimic fly - Sphaerophoria sulphuripes - female Syrphid fly - Sphaerophoria contigua Hoverfly 103-9452 & 103-9463 - Sphaerophoria contigua Syrphid Fly? - Sphaerophoria contigua
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Syrphid Flies)
Subfamily Syrphinae
Tribe Syrphini
Genus Sphaerophoria
Synonyms and other taxonomic changes
revised in(1)
Explanation of Names
Sphaerophoria Lepeletier & Serville 1828
Numbers
14 spp. in our area(2)
Size
5.9-10.8 mm(3)
Habitat
usually associated with dry grassland, also around woodland paths or marshes(4)
Food
Larvae feed on aphids. Adults take nectar and pollen and may be pollinators
Life Cycle
1. Puparium. 2. Mating pair
Remarks
Two main groups in the key(5): species whose lateral scutum stripe ends at the transverse suture (novaeangliae, contigua, sulphuripes, pyrrhina) and those with a faint or strong stripe extending past the suture (scripta, philanthus, brevipilosa, longipilosa, cranbrookensis, asymmetrica, weemsi, bifurcata, abbreviata). The former are usually keyable to species in both sexes (though male sulphuriphes and pyrrhina cannot be told apart); the latter are generally impossible to key from photographs with the exception of male scripta (found only in Greenland) and philanthus and female scripta, cranbrookensis, and bifurcata. In Vockeroth's key, multiple species of females in the latter group fall out together, and can only be told apart when attached in copula to a male that is then keyed from the genitalia.

Stripe ends at the transverse suture (click for an explanation on the first image):


Stripe continues past the transverse suture, either strongly (as in the first image) or more weakly (as in the second image):
Internet References
Works Cited
1.Taxonomic revision of aphid-killing flies of the genus Sphaerophoria in the Western Hemisphere (Syrphidae)
Knutson L.V. 1973. Misc. publications of the Entomological Society of America 9, 1-50.
2.Key to the genera of nearctic Syrphidae
Miranda G.F.G, Young A.D., Locke M.M., Marshall S.A., Skevington J.H., Thompson F.C. 2013. Can. J. Arthropod Identification 23: 1-351.
3.Flower Flies (Syrphidae) - Syrphidae.lifedesks.org
4.Hover Fly Survey of LA County
5.The flower flies of the subfamily Syrphinae of Canada, Alaska, and Greenland, Diptera: Syrphidae
Vockeroth J.R. 1992. The insects and arachnids of Canada, Pt. 18. Ottawa: Agriculture Canada. 456 pp.