Wing of male of Bibiodes aestivus from Hardy (1981, fig. 11) Bibionidae,
Manual of Nearctic Diptera
, Ottawa, p.217-222, (1981)
[1].

Wing of male of Bibio xanthopus from Hardy (1981, fig. 10) Bibionidae,
Manual of Nearctic Diptera
, Ottawa, p.217-222, (1981)
[1].

Wing of male of Dilophus from Hardy (1981, fig. 9) Bibionidae,
Manual of Nearctic Diptera
, Ottawa, p.217-222, (1981)
[1].

Wing of male of Hesperinus brevifrons from Hardy (1981, fig. 8) Bibionidae,
Manual of Nearctic Diptera
, Ottawa, p.217-222, (1981)
[1].

Wing of male of Penthetria heteroptera from Hardy (1981, fig. 7) Bibionidae,
Manual of Nearctic Diptera
, Ottawa, p.217-222, (1981)
[1].

Wing of male of Plecia americana from Hardy (1981, fig. 6) Bibionidae,
Manual of Nearctic Diptera
, Ottawa, p.217-222, (1981)
[1].

Wing venation of Bibionidae. Terminology based on McAlpine Manual of Nearctic Diptera,
, Ottawa, (1981)
[2]. The image was drawn by Giancarlodessi.