C. T.  Maier and Waldbauer, G. P., ?Dual mate-seeking strategies in male Syrphid flies (diptera: Syrphidea)?, Annals of the Entomological Society of America, vol. 72, pp. 54-61, 1979.

C. T.  Maier and Waldbauer, G. P., ?Dual mate-seekings strategies in male Syrphid flies (Diptera: Syrphidae)?, Annals of the Entomological Society of America, vol. 52, pp. 54-61, 1979.