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Species Sphecomyiella valida

large fly - Sphecomyiella valida Fly - Sphecomyiella valida Large fly - Sphecomyiella valida Fly: 2012.04.12.19151 - Sphecomyiella valida Sciomyzidae? - Sphecomyiella valida Mottled-winged fly - Sphecomyiella valida Sphecomyiella valida Sphecomyiella valida
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Acalyptratae")
Superfamily Tephritoidea
Family Pyrgotidae
Genus Sphecomyiella
Species valida (Sphecomyiella valida)
Synonyms and other taxonomic changes
Sphecomyiella valida (Harris) 1841
Canada, eastern to central USA, and into Mexico.
Detailed distribution in our area, from Kondratieff & Fitzgerald (1993):
Canada: Ontario. USA: ARK, CO, CT, FL, IN, IA, KS, IL, MA, MD, MI, MS, MO, NE, NC, NJ, NY, SC, TN, TX
Life Cycle
From the Manual of Nearctic Diptera(1):
"The Pyrgotidae are specialized for internal parasitism in the larval stages on adult scarabaeid beetles. The parasitic habit of some species may have a pronounced effect on controlling populations of pest scarabaeids. Most species of Pyrgotidae fly at night when their hosts are flying. The female deposits her eggs into the abdomen of the beetle while both are in flight."
See Also
Boreothrinax (=Pyrgpota) maculipennis is easy to confuse with S. valida...see item 2) in this forum.

S. nelsoni resembles S. valida but has southern AZ as its known range.
Print References
Kondratieff, B. C. and S. J. Fitzgerald. (1993). A new species of Sphecomyiella (Diptera: Pyrgotidae) from North America. Proceedings of the Entomological Society of Washington 95:554-557 (biostor)
Steyskal, G.C. (1978). Synopsis of the North American Pyrgotidae (Diptera). Proc. ent. Soc. Wash. 80: 149-155 (Full Text)
Steyskal, G. C. (1987). 65. Pyrgotidae. Manual of Nearct. Dipt. 2:813-816. (1)
Internet References
Works Cited
1.Manual of Nearctic Diptera Volume 2
Varies for each chapter; edited by J.F. McAlpine, B.V. Petersen, G.E. Shewell, H.J. Teskey, J.R. Vockeroth, D.M. Wood. 1987. Research Branch Agriculture Canada.