Wing of male of Allognota semivitta from Huckett and Vockeroth (1981, fig. 30) Muscidae,
Manual of Nearctic Diptera
, Ottawa, p.1115-1131, (1981)
[1].

Wing of male of Muscina levida from Huckett and Vockeroth (1981, fig. 29) Muscidae,
Manual of Nearctic Diptera
, Ottawa, p.1115-1131, (1981)
[1].

Wing of male of Synthesiomyia nudiseta from Huckett and Vockeroth (1981, fig. 28) Muscidae,
Manual of Nearctic Diptera
, Ottawa, p.1115-1131, (1981)
[1].

Wing of male of Graphomya idessa from Huckett and Vockeroth (1981, fig. 27) Muscidae,
Manual of Nearctic Diptera
, Ottawa, p.1115-1131, (1981)
[1].

Wing of female of Philornis from Huckett and Vockeroth (1981, fig. 24) Muscidae,
Manual of Nearctic Diptera
, Ottawa, p.1115-1131, (1981)
[1].

Wing of male of Morellia podagrica from Huckett and Vockeroth (1981, fig. 23) Muscidae,
Manual of Nearctic Diptera
, Ottawa, p.1115-1131, (1981)
[1].

Wing of male of Neomyia cornicina from Huckett and Vockeroth (1981, fig. 22) Muscidae,
Manual of Nearctic Diptera
, Ottawa, p.1115-1131, (1981)
[1].

Wing of male of Neomuscina tripunctata from Huckett and Vockeroth (1981, fig. 21) Muscidae,
Manual of Nearctic Diptera
, Ottawa, p.1115-1131, (1981)
[1].

Wing of Musca domestica. From Comstock (fig. 372) The wings of insects,
, Ithaca, N.Y., (1918)
[2].