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Genus Spilomyia

Yellowjacket mimic ? - Spilomyia Fly imitating wasp - Spilomyia longicornis Which Spilomyia? - Spilomyia citima Syrphid - Spilomyia fusca - female ON Sep - Spilomyia fusca - female Spilomyia longicornis Spilomyia longicornis Spilomyia sp. - Spilomyia longicornis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Hover Flies)
Subfamily Eristalinae
Tribe Milesiini
Subtribe Milesiina
Genus Spilomyia
Explanation of Names
Spilomyia Meigen 1803
Greek spilos (σπιλος) 'spot, fleck' + myia (μυια) 'fly'
11 spp. in our area, 17 in the New World(1)(2), >100 in Eurasia(3)
12-17 mm
good wasp mimics: pattern of pigment on eyes hides "fly eyes"; V-mark on thorax, short antennae
keys to spp. in(1)(4)
Widespread in the New World & Eurasia(3); in our area, widespread but poorly represented in se. US: 4 spp. are eastern widespread, 4 western widespread, and 3 restricted to AZ-TX-OK(1)
Larvae in water-filled tree holes
Summer to fall
mimics of social wasps, have habit of resting on the four posterior legs and waving front legs about in almost the same way that vespids move their antennae(5)
Internet References
Works Cited
1.Spilomyia flower flies of the New World (Diptera: Syrphidae)
Thompson F.C. 1996. Mem. Ent. Soc. Wash. 18: 261-272.
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.Thompson F.C., Pape T., Evenhuis N.L. (2013) Systema Dipterorum, Version 1.5
4.Synopsis of the North American species of Spilomyia (Syrphidae, Diptera)
Curran C.H. 1951. American Museum Novitates 1492, 11 pp.
6.Syrphidae of Ontario