Fig. 1

Overview of the study organisms Galerucella sagittariae and its host plant Potentilla palustris. a The egg batches develop for approximately 2 weeks on the lower side of the leaf, after which the larvae feed on the leaves until they pupate on the plant 3 weeks later. b The average number of batches per plot (n = 5) corrected for the host plant density in the plot and c the average number of individual eggs per batch found per plot (n = 10) in the three areas along the soil moisture gradient. The lines within the box plots represent the median and the circle represents the mean. The letters above the error bars indicate statistical differences between the areas and were calculated using Tukey-HSD post hoc analysis