;J84 
Parasites of Common Flies 
emerged in the spring and some in the autumn. The cause of this has not been 
ascertained, but it has been shown that the imagines from eggs laid by a 
single female appear at different times, even though the parasitised fly larvae 
are kept under identical conditions. These parasites attack large larvae. 
Virgin females readily attack larvae and lay numerous eggs from which males 
emerge. Only one parasite emerges from each infected puparium. 
10. A. cephalotes, a smaller braconid, was bred frequently. It attacks 
small fly larvae. Several of the parasites emerge from each infected puparium. 
REFERENCES. 
Fabre, J. H. (1913). The Life of the Fly. Translated by de Mattos, A. T. 
Graham-Smith, G. S. (1916). Observations on the habits and parasites of common flies. 
Parasitology, vm. 440. 
Howard, L. O. and Fiske, W. F. (1912). The importation into the United States of the 
parasites of the Gipsy Moth and the Brown-tail Moth. U.S. Dept, of Agricult. Bureau 
of Entomology. Bull. No. 91. 
Malyshev, S. I. (1913). Zur Biologie der Odynerus- Arten und ihrer Parasite. Horae 
Societatis Entomologicae Rossicae, XL. 1-58. 
