01233nas a2200157   4500008004100000245009500041210006900136300001200205490000600217520073000223653002400953100001500977700001600992700002001008856004701028       1991                        eng d00aPhylogenetic Studies of Insect Plant Interactions - Insights into the Genesis of Diversity0 aPhylogenetic Studies of Insect Plant Interactions Insights into   a290-2930 v63 aPhylogenetic analyses (and related historical evidence) can be used to test hypotheses about the opportunity for coevolution among plants and insect herbivores, the role of plant chemistry in mediating host shifts, the reality of coevolutionary ’arms races’, and the role of novel defensive or counterdefensive characteristics in enhancing rates of diversification. Recent analyses provide evidence on each of these hypotheses. The strong phylogenetic component in many insect-plant associations suggests that host shifts by insects are often strongly constrained, that insect diets may not be ’optimal’, and that the trophic structure and species diversity of local communities strongly reflect evolutionary history.10acoevolution ecology1 aMitter, C.1 aFarrell, B.1 aFutuyma, D., J.  uhttps://cephaloleia.myspecies.info/node/42