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Family Scathophagidae - Dung Flies

Scathophaga sp? - Scathophaga stercoraria - male - female Fungus-ridden fly - stages - Scathophaga 7009262 Scathophagid - Scathophaga stercoraria Some dung fly?  - Scathophaga furcata Muscoidea Lost Lake leaf miner on Trillium LL11 2017 1 Fly with megalopteran eggs Large Fly - Scathophaga - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Calyptratae)
Superfamily Muscoidea
Family Scathophagidae (Dung Flies)
Synonyms and other taxonomic changes
misspelled 'Scatophagidae' in some sources (a taxon with that name is a family of fish)
used to be treated as a subfamily in the Muscidae or Anthomyiidae(1)
Explanation of Names
Scathophagidae Robineau-Desvoidy 1830
Numbers
ca. 150 spp. in almost 40 genera in our area(2), >400 spp. in ~60 genera worldwide(3)(4)
Size
3-11 mm(1)
Identification
Cruciate interfrontal setae absent or reduced to hairs, katepisternum or sternopleuron usually with only one seta on posterior end, but sometimes variable, ventral surface of scutellum bare, costa usually without spinules
Habitat
Some larvae live in dung, others are leaf miners, stem-borers or feed in seed capsules, still others are aquatic predators and predators on other insect larvae in wet situations
Food
Larvae of Delininae mine leaves of Liliaceae, Orchidaceae, and Commelinaceae. Larvae of Scathophaginae have been reported as phytophagous (especially in Scirpus, Juncus, and Pedicularis), predaceous, or coprophagous (as in the common Scathophaga species, although some feed in seaweed). Adults seem to be predaceous.(1)
See Also
Heleomyzidae (esp. Suilla) may look superficially similar
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.
2.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
3.USDA Diptera Site (now closed)
4.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.