Saskya Van Nouhuys, saskya@cornell.edu, University of Helsinki, Biological and Environmental Sciences, PO Box 65 (Viikinkaari 1), Helsinki, Finland
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Species 1: Hymenoptera Ichneumonidae 
Hyposoter horticolaSpecies 2: Lepidoptera Nymphalidae 
Melitaea cinxia (Glanville fritillary)
Keywords:   host finding, spatial population dynamics