1. C. S. Bartholomew, and K. V. Yeargan .Phenology of milkweed (Asclepiadaceae) growth and monarch (Lepidoptera: Nymphalidae) reproduction in Kentucky and ovipositional preference between common and honeyvine milkweed., J. Kans. Entomol. Soc., 74 :2001 .211 –220 .
2. Early Stage of Host Range Expansion by a Specialist Herbivore, Euphydryas Phaeton (Nymphalidae)
3. L. P. Brower, Understanding and misunderstanding the migration of the monarch butterfly (Nymphalidae) in North America: 1857–1995., J. Lepid. Soc., 49 :1995 .304 –385 .
4. The biology of post-invasion events
5. R. A. Casagrande, The “Iowa” potato beetleLeptinotarsa decemlineata., Bull. Entomol. Soc. Am., 31 :1984 .27 –29 .