1. Barton, N. H., J. S. Jones, and J. Mallet. 1988. No barriers to speciation. Nature
336: 13–14.
2. Berlocher, S. H. 1976. The genetics of speciation in Rhagoletis (Diptera: Tephritidae). Ph.D. dissertation, University of Texas at Austin, TX.
3. Berlocher, S. H. 1984. A new North American species of Rhagoletis (Diptera: Tephritidae), with records of host plants of Cornus-infesting Rhagoletis. J. Kan. Ent. Soc. 57: 237–242.
4. Berlocher, S. H. 1989. The complexities of host races and some suggestions for their identification by enzyme electrophoresis. Pp. 51–68 in H. D. Loxdale and J. den Hollander (Eds.), Electrophoretic Studies of Agricultural Pests. Syst. Assoc. Spec., Vol. 39. Oxford University Press, Oxford, UK.
5. Berlocher, S. H. 1995. Population structure of Rhagoletis mendax, the blueberry maggot. Heredity
74: 542–555.