Knutson, L.V., Thompson, F.C. & Vockeroth, J.R. (1975). Family Syrphidae, pp. 307–374. In: Delfinado, M.D. & Hardy, D.E. eds., A catalog of the Diptera of the Oriental Region. Volume II. Suborder Brachycera through Division Aschiza, Suborder Cyclorrhapha. University Press of Hawaii, Honolulu. [ix] + 459 pp.
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Knutson, L.V., Thompson, F.C. & Vockeroth, J.R.
1975
Family Syrphidae, pp. 307–374. In: Delfinado, M.D. & Hardy, D.E. eds., A catalog of the Diptera of the Oriental Region. Volume II. Suborder Brachycera through Division Aschiza, Suborder Cyclorrhapha.
University Press of Hawaii, Honolulu. [ix] + 459 pp.