they have been here since 1996. the zone on LI is most of massapequa,amityville, copaige, and some of lindenhurst. there is also a smaller zone in islip but I believe that has been eradicated. but laws say the quarantine must be found free of infestation for 5 years for the quarantine to be listed. Its my belief the the amityville quarantine is well under control but we do find an infested tree here and there. the areas in the city are not as well contained due to difficulties in getting in people yards. they go after 11 types of trees maple, elm, willow, poplar, plane trees, ash, hackberry, mountain ash, mimosa, birch, and horse chestnut. its actually the larva that due the most damage, chewing their way through the tree and killing it. there is a cooperative program working on this problem between usda and nys dept of agriculture. i work for nys.