C.  F. Thompson, Fee, F. D., and Berzark, L. G., ?Two immigrant synanthropic flower flies (Diptera: Syrphidae) new to North America?, Entomological News, vol. 101, pp. 69-74, 1990.

C.  F. Thompson, ?Spilomyia flower flies of the New World (Diptera: Syrphidae)?, Memoirs of the Entomological Society of Washington, vol. 18, pp. 261-272, 1996.