Fig. 2

Aggression received by Attaphila cockroaches. Cockroaches associated with Acromyrmex octospinosus and Atta colombica colonies received aggression from non-nestmate, but hardly from nestmate workers. Allospecific workers were always more aggressive than conspecific non-nestmate workers, and cockroaches from Atta colonies received more aggression than those that were associated with Acromyrmex colonies. The boxplots indicate median (horizontal mark), interquartile range (box), data range, and outliers. The sample size is specified above the boxes