Thompson, F. C. 1981. The flower flies of the West Indies (Diptera: Syrphidae). Memoirs of the Entomological Society of Washington 9, 200 pp. [1981.09.02].
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith