Wing of male of Dasiops alveofrons from McAlpine (1981, fig. 23) Lonchaeidae,
Manual of Nearctic Diptera
, Ottawa, p.791-797, (1981)
[2].

Wing of male of Lonchaea polita from McAlpine (1981, fig. 22) Lonchaeidae,
Manual of Nearctic Diptera
, Ottawa, p.791-797, (1981)
[2].