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Genus Somula

Sphecomyia? - Somula decora Syrphid Fly - Somula decora - male Syrphid - Somula decora - female Syrphid - Somula decora large Tachinid or Syrphid fly - Somula decora large Tachinid or Syrphid fly - Somula decora Yellowjacket Mimic - Somula decora Somula decora? - Somula decora - male
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 Milesiini
Subtribe Blerina
Genus Somula
Explanation of Names
Somula Macquart 1847
2 spp. in the genus, both in our area(1)(2)
13-16 mm
Flies with large, transverse or oblique, yellow spots on at least second, third and fourth tergites.
Details: Flies with yellow face and with abdomen brightly marked with yellow; front and antennal region greatly produced into a pedicel which bears short antennae; face produced downwards, nearly vertical in profile, barely concave above, barely convex below; third antennal segment orbicular; eyes bare, dichoptic in male; scutellum without fringe; humeri opaque with yellow pile; metasternum pubescent; wings dark brown anteriorly, hyaline posteriorly, apical cell not petiolate; hind femora slender; abdomen oval, black, with three or four pairs of conspicuous, oblique, large, oval, bright yellow, opaque spots, first pair on second segment, broader towards middle, concave in front and directed backwards and outwards, but not reaching sides, sides of segment narrowly yellow, with yellow pile, black part opaque, except a posterior metallic cross-band, broadest in middle; third and fourth segments similar; fifth segment in female with spots small and nearly round.
e. NA(1)
Internet References
Works Cited
1.Thompson F.C., Pape T., Evenhuis N.L. (2013) Systema Dipterorum, Version 1.5
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.