a Survival of Chorthippus parallelus grasshoppers in the reciprocal feeding experiment with one, three and eight plant species. Numbers above bars indicate the number of grasshoppers analysed. Bars represent means ± standard error. b Survival of C. parallelus grasshoppers in the 15 individual treatments. Bars represent means ± standard error. c Developmental stage of C. parallelus at death in the 15 different treatments: striped bars first instar, black bars second instar, dark grey bars third instar, light grey bars fourth instar, white bars mature