Berenbaum, M.R., A.R. Zangerl, and E.S. Green. 1993. Web costs and web defense in the
parsnip webworm (Lepidoptera: Oecophoridae). Environmental Entomology 22:791-795
Green, E.S., A.R. Zangerl, and M.R. Berenbaum. 1988. An ecological benefit of
silk-spinning behavior in the parsnip webworm, Depressaria pastinacella
(Lepidoptera: Oecophoridae). In press.