Overview: Benefits, pest status and control of eriophyoids are discussed.A special chapter on their quarantine importance of value to quarantine officers.Eriophyoid knowledge since 1996 is updated and gaps for Fourteen informative papers dealing with their DNA, species interactions, adventiveness, host specificity, potential as boi-contol agents of weeds, chemical control, behaviour, their role in fungal pathogen epidemiology, influence in forests and on ornamentals, collecting and mounting techniques and their interaction with crops are presented here. This is an extensive and valuable contri
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