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TaxonomyBrowse
Info
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Genus Helophilus

Fly - Helophilus Which Helophilus? - Helophilus - male Fly for ID - Helophilus Lenoir fly - Helophilus Helophilus sp. maybe? - Helophilus Helophilus - Helophilus fasciatus Flower Fly - Helophilus fasciatus - female MN Sep - Helophilus - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Syrphid Flies)
Subfamily Eristalinae
Tribe Eristalini
Subtribe Helophilina
Genus Helophilus
Explanation of Names
Helophilus Meigen 1822
Greek 'marsh lover' (refers to the habitat)
Numbers
9 spp. in our area(1)
Size
10-15 mm(2)
Identification
Lengthwise-striped thorax, transverse-striped abdomen, broad pterostigma.
Pterostigma of Helophilus and Parhelophilus (Lejops is similar):

Larva's ventral surface with 3 pairs of projections between the anal opening and the base of the long tail.
Range
Widespread, more speciose in n. Canada; ranges from(3):
H. fasciatus and latifrons widespread from so. Canada to Mexico
H. alaskensis, neoaffinis, stricklandi in far North
The other spp. boreal & western montane
Food
Larvae feed on submerged plant litter
Remarks
Unlike most species of Syrphidae, eyes of males do not touch; they are not holoptic and are not different from the eyes of females. Abdominal details are necessary to tell sex
See Also
Parhelophilus (typically smaller, narrow pterostigma)
Lejops (also with narrow pterostigma)
Internet References
Works Cited
1.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. Canadian Journal of Arthropod Identification 23: 1-351.
2.Syrphidae of Oklahoma (Diptera)
Shorter D.A., Drew W.A. 1976. Proc. Okla. Acad. Sci. 56: 75-94.
3.A Catalog of the Diptera of America North of Mexico
Alan Stone, et al. 1965. United States Department of Agriculture.
4.Syrphidae of Ontario