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Family Sciomyzidae - Marsh Flies, Snail-killing Flies

Fly with patterned wings - Trypetoptera canadensis Marsh Fly - Tetanocera Tetanocera ferruginea - Tetanocera What kind of wasp or fly is this? - Sepedon armipes - male Trypetoptera canadensis? - Trypetoptera canadensis - male Sciomyzidae, dorsal - Tetanocera Diptera - Limnia conica Marsh fly
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Acalyptratae")
Superfamily Sciomyzoidea
Family Sciomyzidae (Marsh Flies, Snail-killing Flies)
Synonyms and other taxonomic changes
northeastern fauna reviewed in (1)
Explanation of Names
Sciomyzidae Fallén 1820
almost 200 spp. in >20 genera in our area(2), all in the nominate subfamily; ~620 spp. in 66 genera total(3)
5-10 mm
body yellowish, brownish, or grayish; antennae extend forward noticeably, a distinctive feature; wings often spotted or otherwise marked
northeastern spp., in (1); CA spp., in (4)
throughout NA and the world
adults around marshes, lakes, ponds, or wooded areas; larvae are aquatic
larvae parasitize or prey on freshwater or terrestrial snails(5)
See Also
Dryomyzidae are similar but have a well-developed clypeus
Works Cited
1.Sciomyzidae of northeastern North America
Schorno S., Marshall S.A., Murphy W.L., Muzzatti M. 2019. Canadian Journal of Arthropod Identification 35: 1-331.
2.Nearctic Diptera (Discover Life's IDnature guide)
3.Order Diptera Linnaeus, 1758. In: Zhang Z.-Q. (ed.) Animal biodiversity: An outline of higher-level classification...
Pape T., Blagoderov V., Mostovski M.B. 2011. Zootaxa 3148: 222–229.
4.The marsh flies of California: (Diptera, Sciomyzidae)
Fisher T.W., Orth R.E. 1983. Bull. Cal. Insect Survey 24, vii+117 pp.
5.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.