Bibliography of butterflies

Sperling, Felix A. H., and Paul P. Feeny

1995. Umbellifer and composite feeding in Papilio: Phylogenetic frameworks and constraints on caterpillars, pp. 299-306, 2 figs. In: Scriber, J. M., Y. Tsubaki and R. C. Lederhouse (Eds.), Swallowtail butterflies: Their ecology and evolutionary biology. Gainesville, Scientific Publishers. [Mexico]

Sperling, Felix A. H., and Richard G. Harrison

1994. Mitochondrial DNA variation within and between species of the Papilio machaon group of swallowtail butterflies. Evolution 48(2): 408-422, 5 figs., 1 tab. (2 November) [Papilio polyxenes stabilis Rothschild & Jordan, P. p. americus Kollar; Costa Rica, Ecuador]