1969] 
Thompson — Microdontine Flies 
85 
Rondani, C. 
1857. Dipterologiae Italicae prodomus. Vol. 2 (contains the syrphids). 
264 pp. (Parma). 
Wheeler, W. M. 
1924. Two extraordinary larval myrmecophiles from Panama. Proc. 
Natl. Acad. Sci. 10: 237-244. 
WlLLISTON, S. W. 
1886. Synopsis of the North American Syrphidae. U.S. Natl. Mus. 
Bull. 31: i-xxx, 1-335. (actual date 1887). 
Wirth, W. W., Y. S. Sedman and H. V. Weems, Jr. 
1965. Family Syrphidae. in Stone, A., Sabrosky, C., Wirth, W. W., 
Foote, R. H., and Coulsen, J. 1965. A catalog of the Diptera of 
America north of Mexico. U.S. Dept. Agr. Handbook no. 276. 
1696 pp. 
