C. W.  Johnson, ?A list of the insects fauna of Nantucket, Massachusetts?, Publications of the Nantucket Maria Mitchell Association, vol. 3(2), p. 174 pp + xviii, 1930.

E. P.  Felt and Chamberlain, K. F., ?The occurrence of insects at some height in the air, especially on the roofs of high buildings?, Circular (State of New Jersey Department of Agriculture, Bureau of Statistics and Inspection), vol. 17, pp. 1-70, 1935.