G. C.  Crampton, ?The terminal abdominal structures in male Diptera?, Psyche, a journal of Entomology, vol. 48, pp. 79-94, 1941.

G. C.  Crampton, ?The Diptera, or true flies of Connecticut. The external morphology of the Diptera?, in The guide to the insects of Connecticut, vol. 6(1), 1942, pp. 10-165.