C. W.  Johnson, ?Fauna of New England. 15. List of the Diptera or two-winged flies?, Occasional Papers of the Boston Society of Natural History, vol. 7(15), p. 326 pp, 1925.

O. A.  Johannsen, ?Order Diptera?, in List of the insects of New York with a list of the spiders and certain other allied groups, M. D.  Leonard, Ed. 1928, pp. 687-869.