Box-and-whisker plots for bite rates inflicted in recipient colonies. Introductions were carried out in colonies from populations of M. ravouxi, T. unifasciatus, T. nylanderi and T. rabaudi from Anduze (myr_an, uni_an, nyl_an and rab_an respectively), and of T. unifasciatus and T. nylanderi from Fontainebleau (uni_f and nyl_f respectively). Box plots show the median and 25-75% percentiles. Whiskers show all data excluding outliers outside the 10th and 90th percentiles (circles). Figures under bars indicate number of tests. *** P < 0.001.