Wing of male of Thaumalea americana from Stone (1981, fig. 3) [1].

References

1. Stone A., Peterson B.V.
   (1981) Thaumaleidae. in: McAlpine J.F. (Ed.), Manual of Nearctic Diptera. Agriculture Canada, Ottawa, pp. 351-353.

Wing of female of Trichothaumalea pluvialis from Stone (1981, fig. 2) [1].

References

1. Stone A., Peterson B.V.
   (1981) Thaumaleidae. in: McAlpine J.F. (Ed.), Manual of Nearctic Diptera. Agriculture Canada, Ottawa, pp. 351-353.

Wing venation of Thaumaleidae. Terminology based on McAlpine [1]. The image was drawn by Giancarlodessi.

References

1. McAlpine J.F., et al
   (1981) Manual of Nearctic Diptera. Research Branch, Agriculture Canada, Ottawa.