For example , myrmecochory increased the rate of diversification more than twofold in plant groups in which it has evolved .
Myrmecochorous lineages contain more than twice as many species as plant groups ' non-myrmecochorous sister groups .
For example , myrmecochory increased the rate of diversification more than twofold in plant groups in which it has evolved because myrmecochorous lineages contain more than twice as many species as their non-myrmecochorous sister groups .