Wing of male of Poecilosomella angulata from Marshall (1981, fig. 9) Sphaeroceridae,
Manual of Nearctic Diptera
, Ottawa, p.993-1006, (1981)
[1].

Wing of male of Pterogramma palliceps from Marshall (1981, fig. 8) Sphaeroceridae,
Manual of Nearctic Diptera
, Ottawa, p.993-1006, (1981)
[1].

Wing of female of Leptocera nivalis from Marshall (1981, fig. 7) Sphaeroceridae,
Manual of Nearctic Diptera
, Ottawa, p.993-1006, (1981)
[1].

Wing of female of Halidayina spinipennis from Marshall (1981, fig. 6) Sphaeroceridae,
Manual of Nearctic Diptera
, Ottawa, p.993-1006, (1981)
[1].

Wing of male of Coproica ferruginata from Marshall (1981, fig. 5) Sphaeroceridae,
Manual of Nearctic Diptera
, Ottawa, p.993-1006, (1981)
[1].

Wing of female of Leptocera fontinalis from Marshall (1981, fig. 4) Sphaeroceridae,
Manual of Nearctic Diptera
, Ottawa, p.993-1006, (1981)
[1].

Wing of female of Copromyza equina from Marshall (1981, fig. 3) Sphaeroceridae,
Manual of Nearctic Diptera
, Ottawa, p.993-1006, (1981)
[1].

Wing of male of Sphaerocera curvipes from Marshall (1981, fig. 2) Sphaeroceridae,
Manual of Nearctic Diptera
, Ottawa, p.993-1006, (1981)
[1].