Wing of female of Xylomya americana from James (1981, fig. 3) Xylomyidae,
Manual of Nearctic Diptera
, Ottawa, p.493-495, (1981)
[1].

Wing of female of Solva pallipes from James (1981, fig. 2) Xylomyidae,
Manual of Nearctic Diptera
, Ottawa, p.493-495, (1981)
[1].

Wing venation of Xylomyidae. The image was drawn by Giancarlodessi.