Some adaptations between Danaus plexippus and its food plant, with notes on Danaus chrysippus and Euploea core (Insecta: Lepidoptera)
Journal of Zoology vol.185 no.4
August 1978 pp.437-467
Miriam Louisa Rothschild With C.A. Dixon, J.M. Erickson and D.N. Kellet