Title: Biblio RTF Export
Author: Biblio 7.x

J. W.  Meigen, Systematische Beschreibung der bekannten europaischen zweiflugeligen Insekten, vol. 3. Dritter Theil. Schulz-Wundermann, Hamm., 1822, pp. x + 416 pp., pls. 22-32.

F.  Walker, List of the specimens of dipterous insects in the collection of the British Museum. London: British Museum (Natural History), 1849, pp. Part II, [iii]+231-484. [1849.04.21]; Part III: [iii]+485-687. [1849.06.30]; Part IV. Pp. [3] + 689-1172 + [2] [1849.12.08].

A. A.  Stackelberg, ?Genus Neoascia Will.?, 1955.

A. A.  Stackelberg, ?Keys to Palaearctic Syrphidae (Diptera) for Genera Sphegina, Zelima, Penthesilea, and Neoascia?, p. 29, 1956.

F. C.  Thompson, ?Keys to Nearctic Syrphidae (Diptera)?, p. 88, 1991.