1. Blakley, N. R.: Evolutionary responses to environmental heterogeneity in milkweed bugs (Oncopeltus, Hemiptera, Lygaeidae). Ph.D. Thesis, University of Iowa, 1977.
2. Caldwell, R. L.: A comparison of the dispersal strategies of two milkweed bugs, Oncopeltus fasciatus and Lygaeus kalmii. Ph.D. Thesis, University of Iowa, 1969.
3. Caldwell, R. L.: A comparison of the migratory strategies of two milkweed bugs. In: Experimental Analysis of Insect Behaviour. Barton Browne, L. (ed.). New York: Springer-Verlag, 1974.
4. Derr, J. A., Alden, B. M., Dingle, H.: Insect life histories in relation to migration, body size and host plant array: a comparative study of Dysdercus. J. Anim. Ecol. (1981) (in press).
5. Dingle, H.: The relation between age and flight activity in the milkweed bug, Oncopeltus. J. Exp. Biol. 42, 269–283 (1965).