The wing venation of Epistrophe leiophtalma (Schiner & Egger, 1853).

Wing of a female of Sphegina elegans (Schummel, 1843).

Wing of male of Eristalis tenax from Vockeroth and Thompson (1981, fig. 60) Syrphidae,
Manual of Nearctic Diptera
, Ottawa, p.713-743, (1981)
[1].

Wing of male of Parhelophilus laetus from Vockeroth and Thompson (1981, fig. 59) Syrphidae,
Manual of Nearctic Diptera
, Ottawa, p.713-743, (1981)
[1].

Wing of male of Helophilus latifrons from Vockeroth and Thompson (1981, fig. 58) Syrphidae,
Manual of Nearctic Diptera
, Ottawa, p.713-743, (1981)
[1].

Wing of male of Merodon equestris from Vockeroth and Thompson (1981, fig. 57) Syrphidae,
Manual of Nearctic Diptera
, Ottawa, p.713-743, (1981)
[1].

Wing of male of Volucella bombylans from Vockeroth and Thompson (1981, fig. 56) Syrphidae,
Manual of Nearctic Diptera
, Ottawa, p.713-743, (1981)
[1].

Wing of male of Teuchocnemis lituratus from Vockeroth and Thompson (1981, fig. 55) Syrphidae,
Manual of Nearctic Diptera
, Ottawa, p.713-743, (1981)
[1].

Wing of male of Milesia virginiensis from Vockeroth and Thompson (1981, fig. 54) Syrphidae,
Manual of Nearctic Diptera
, Ottawa, p.713-743, (1981)
[1].

Wing of male of Orthonevra pulchella from Vockeroth and Thompson (1981, fig. 53) Syrphidae,
Manual of Nearctic Diptera
, Ottawa, p.713-743, (1981)
[1].