Wing of male of Trichopsidea clausa from Teskey (1981, fig. 3) Nemestrinidae,
Manual of Nearctic Diptera
, Ottawa, p.585-588, (1981)
[1].

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

Wing of Rhynchocephalus. From Comstock (fig. 358) The wings of insects,
, Ithaca, N.Y., (1918)
[2].