Wing of female of Bolbodimyia atrata from Pechuman and Teskey (1981, fig. 37) [1].

References

1. Pechuman L.L., Teskey H.J.
   (1981) Tabanidae. in: McAlpine J.F. (Ed.), Manual of Nearctic Diptera. Agriculture Canada, Ottawa, pp. 463-478.