they are known to host commonly hosted pests known to have a major impact on plant species which are of major economic, social or environmental importance to the Union territory;
is eol go mbíonn lotnaidí a óstáiltear go minic le fáil orthu ar eol go mbíonn tionchar ollmhór acu ar speicis phlandaí a bhfuil tábhacht ollmhór eacnamaíoch, shóisialta nó chomhshaoil acu do chríoch an Aontais;