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For Insects, Spiders & Their Kin
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Species Eristalis transversa - Transverse Flower Fly

Hoverfly - Eristalis transversa - male Eristalis transversa, Transverse Flower Fly - Eristalis transversa - male Flower Fly - Eristalis transversa - male Flower Fly - Eristalis transversa - male possible bee-mimicking flower fly? - Eristalis transversa Eristalis transversa in wildflower meadow - Eristalis transversa - female Please Identify - Eristalis transversa Syrphidae - but which one? - Eristalis transversa
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 Eristalina
Genus Eristalis
No Taxon (Subgenus Eoseristalis)
Species transversa (Transverse Flower Fly)
Synonyms and other taxonomic changes
Eristalis transversa Wiedemann, 1830. Synonyms/taxonomic notes:
Eristalis transversus (spelling/gender)
9-11 mm
Thorax distinctly bicolored (gray on front half, black on rear half); scutellum bright yellow, much brighter than the pale yellow of other Eristalis species. This combination of characters is diagnostic.
Includes eastern North America: on lists from Ontario, North Carolina
Fields with flowers, gardens
May-October (Ontario)
Late April to mid October (other parts of Canada)
March-December (North Carolina)
Adults take nectar. Larvae feed on small organisms in stagnant water.
Print References
Brimley p. 352 (1)
Marshall--photo 469.5 (2)
Internet References
North Carolina State University Entomology--common in collection, 177 pinned, including from that state
Canadian National Collection of Insects--genus Eristalis, Canadian National Collection of Insects, Plate_2a
Works Cited
1.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.
2.Insects: Their Natural History And Diversity: With a Photographic Guide to Insects of Eastern North America
Stephen A. Marshall. 2006. Firefly Books Ltd.