E. S.  Tucker, ?Contributions towards a catalogue of the insects of Kansas?, Transactions of the Kansas Academy of Science, vol. 20(2), pp. 190-201, 1906.

P. G.  Strobl, ?Spanische Dipteren II?, Memorias de la R. Sociedad española de historia natural, vol. 3(1905), pp. 271-422, 1906.