Representativeness of the sampling analyzed in our study: Numbers of genera and species included in our dataset, known in Europe and occurring worldwide are reported for each aphid subfamily.

*A full list of the materials analyzed and associated data are available in Supporting Information Table S1 and Table S2. Classification is as for Remaudière and Remaudière [28] and Nieto Nafria et al.[29]. European data were provided by Fauna Europea (http://www.faunaeur.org/) [37], and world data were provided by Foottit et al.[1].