The more we know about natural history of species, the better we can understand basic ecology and evolution. Some of the work I do is on the natural history of parasitoids and their host butterflies.
Kuussaari, M., van Nouhuys, S., Hellmann, J., Singer, M. C. 2004. Checkerspot butterfly larval biology. In On the Wings of Checkerspots: A Model System for Population Biology (P. R. Ehrlich & I. Hanski, eds.) Oxford University Press, pp. 138-160 PDF
Reudler Talsma, J., Biere, A., Harvey, J. A., van Nouhuys, S. 2008. Oviposition cues for a specialist butterfly: plant chemistry and size. Journal of Chemical Ecology, 34: 2102-1212 PDF
Reudler Talsma, J., Torri, K. van Nouhuys, S. 2008. Host plant use by the Heath fritillary butterfly, Melitaea athalia: plant habitat, species and chemistry. Arthropod-Plant Interactions, Arthropod-Plant Interactions, 2: 63-75 PDF
Saastamoinen, M., van Nouhuys, S., Nieminen, M., O’Hara, B., Suomi, J. 2007. Development and survival of a specialist herbivore, Melitaea cinxia, on host plants producing high and low concentrations of iridoid glycosides. Annales Zoologici Fennici, 44: 70-80. PDF
van Nouhuys, S. & E. Punju Coexistence of competing parasitoids: which is the fugitive and where does it hide? 2010 Oikos, 119: 61-70 pdf
Shaw, M. R, Stefanescu, C., van Nouhuys, S. 2009 Parasitoids of European Butterflies in Ecology of Butterflies of Europe (eds. J. Settele, T. G. Shreeve, M. Konvicka & H. Van Dyck) Cambridge University Press pdf
van Nouhuys, S., Hanski, I. 2004. Natural enemies of checkerspot butterflies. In On the Wings of Checkerspots: A Model System for Population Biology (P. R. Ehrlich & I. Hanski, eds.) Oxford University Press, pp. 161-180 PDF
Kankare, M., Stefanescu, C., van Nouhuys, S., Shaw, M. R. 2005. Host specialization by Cotesia wasps (Hymenoptera: Braconidae) parasitising species-rich Melitaeini (Lepidoptera: Nymphalidae) communities in north-eastern Spain. The Biological Journal of the Linnaean Society, 86: 45-65 PDF
Kankare, M., van Nouhuys, S. Hanski, I. 2005. Genetic divergence among host-specific cryptic species in Cotesia melitaearum agg., a parasitoid of checkerspot butterflies. Annals of the Entomological Society of America, 98: 382-394PDFvan Nouhuys, S, & J. Ehrnsten. 2004. Parasitoid behavior that leads to uniform parasitism of a host available only a few hours per year. Behavioral Ecology, 15: 661-665 PDF