data_field18/ data_field19: Data obtained during field sampling in 2018 and 2019 respectively ID combined plot and round ID (2018) or combined plot and pot ID (2019) treatments "Treatment (H0: H. defensa free aphids; H15: Aphids with haplotype H15; H76: Aphids with haplotype H76; H402: Aphids with haplotype H402; Hmix: Aphids with a mix of all three haplotypes" plot "Plot identity; 2019 only; corresponds to each group of 5 pots in the same location with different treatments in 2019" pot "Pot identity; nested within plot for 2019" round temporal block in 2019, each consecutive sampling event in 2019 date Sampling date L_stem stem length N_aphids "Number of aphids; rough estimates in 2018, exact counts in 2019" Aph_mum Number of Aphelinus spec. Mummies other_mum Number of other mummies N_mummies Total number of mummies ants Number of ants adult_para Number of adult parasitoids encountered on the plant Syr_egg Number of Syrphidae eggs Syr_larvae Number of Syrphidae larvae Syrphidae_pupae Number of Syrphidae pupae Syr_adult Number of Syrphidae adults Aph_egg Number of Aphidoletes eggs Aph_larvae Number of Aphidoletes larvae Aph_pupae Number of Aphidoletes pupae Aph_adult Number of Aphidoletes adults Lad_egg Number of ladybug eggs Lad_larvae Number of ladybug larvae Lad_pupae Number of ladybug pupae Lad_adult Number of ladybug adults Lac_egg Number of lacewing eggs Lac_larvae Number of lacewing larvae Lac_pupae Number of lacewing pupae Lac_adult Number of lacewing adults para_mit Number of parasitic mites pred_bug Number of predatory bugs aphids_killed_by_fungi "Number of aphids killed by fungi; only observed in 2018 " other_aphids "Number of aphids other than A. fabae; only observed in 2018 " remarks parasitoids18/ parasitoids19: Identification of parasitoids hatching from samples round temporal block in 2019, each consecutive sampling event in 2019 ID "combined plot and round ID (2018) or combined plot and pot ID (2019); corresponds to ID in data_field18 and data_field19 respectively" Species Parasitoid species/ genus Number Number of parasitoids Male "Number of male parasitoids; only recorded in 2018 and only for Lysiphlebus" Female "Number of female parasitoids; only recorded in 2018 and only for Lysiphlebus" Collection "Method of collection (Plate= parasitoids hatched from mummies visible during sampling and stored in insect dishes until hatching; bag=parasitoids hatched from plants sampled and kept in bags after sampling; not visible/ identified as mummies during sampling)" Remarks migration_test19: Molecular analysis to test for migration between pots ID Combined plot and pot ID treatment "Treatment (H0: H. defensa free aphids; H15: Aphids with haplotype H15; H76: Aphids with haplotype H76; H402: Aphids with haplotype H402; Hmix: Aphids with a mix of all three haplotypes" samples Number of aphids collected for extraction Ham Number of samples in which H. defensa was identified through PCR Ham_unclear Number of samples among these in which bands were unclear NoHam Number of samples in which H. defensa was not identified through PCR NoHam_unclear Number of samples among these in which bands were unclear failed PCR/ DNA extraction failed (i.e. Buchnera control negativ)