“…In these cases, regardless of their taxonomic identity, the most common species tend to interact at higher frequencies with greater number of species. Th is discrepancy could be the result of diff erences in the degree of generalization between these types of networks; whereas networks of mutualistic interactions tend toward generalization ( Bascompte et al, 2006 ), plant-herbivore networks are highly specialized ( Prado and Lewinsohn, 2004 ;Cagnolo et al, 2011 ;López-Carretero et al, 2014 ). Th is specialization has developed from a complex set of ecological, biochemical and historical factors ( Ehrlich and Raven, 1964 ;Novotny et al, 2002 ;Novotny and Basset, 2005 ;Ødegaard et al, 2005 ;Weiblen et al, 2006 ;Gómez-Zurita et al, 2007 ) that, in general, have promoted interactions within subgroups of available plant species regardless of their coverage or density.…”