Key to the genera of nearctic Syrphidae Miranda G.F.G, Young A.D., Locke M.M., Marshall S.A., Skevington J.H., Thompson F.C. 2013. Can. J. Arthropod Identification 23: 1‒351.
Contributed by tom murray on 6 September, 2005 - 4:06pm Additional contributions by Beatriz Moisset, v belov Last updated 11 February, 2021 - 9:44am