referenceID	fullReference
Parmenter	Parmenter. L. (1953) The hoverflies (Syrphidae). Entomologists' Record and Journal of Variation, 65, 122-126, 154-159, 185-190, 234-238.
Grosser	Grosser, N. (1979) [Onthe daily activity of Syrphus corollae (Fabr,) and Epirtrophe balteara (DeG.) (Diptera, Syrphidae).] Entomologische Nachrich- tenblatt, 23 (lo), 150-153.