F. M.  Hull, ?Some Neotropical and Oriental Syrphid flies in the United States National Museum?, Journal of the Washington Academy of Sciences, vol. 27, pp. 165-176, 1937.

F. M.  Hull, ?New american syrphid flies (Diptera)?, American Museum Novitates, vol. 1151, pp. 1-3, 1941.

F. M.  Hull, ?Some undescribed Syrphid flies from the Neotropical region?, Journal of the Washington Academy of Sciences, vol. 31, pp. 432-440, 1941.