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Family Sciomyzidae - Marsh Flies, Snail-killing Flies

Fly in Wetland - Tetanocera Sciomyzidae - Marsh Flies - Tetanocera Trypetoptera canadensis? - Trypetoptera canadensis - male I believe this is a specimen of Euthycera arcuata; positive i.d. requested. - Euthycera flavescens Marsh Fly? I'm at a loss for the identification of this insect. Any help would be appreciated - Dictya marsh fly with lots of little white dots on wings - Euthycera 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; ~540 spp. in 62 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); Indiana spp., in (3)
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.Comprehensive taxonomic, faunistic, biological, and biogeographic inventory and analysis of the snail-killing flies...of Indiana
Murphy, William L. 2021. Proceedings of the Indiana Academy of Science, Vol. 129 (2), p143-265. 123p. .
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.