y ▁c ush ion ▁scale ▁– ▁I c ery a ▁purchase ▁– , ▁an ▁Australian ▁bug , ▁soft ▁w ax ▁scale ▁– ▁Cer op last es ▁destruct or ▁– , ▁an ▁import ▁from ▁over se as ▁ ▁and ▁the ▁Australian ▁green ▁shield ▁bug ▁– ▁Gla u cias ▁am y oti ▁– , ▁native ▁to ▁New ▁Zealand ▁despite ▁its ▁name ▁also ▁par as it ise ▁the ▁Pitt os por um ▁species , ▁but ▁have ▁a ▁more ▁varied ▁range ▁of ▁hosts . ▁All ▁attach ▁themselves ▁to ▁a ▁suitable ▁part ▁of ▁the ▁plant ▁and ▁feed ▁on ▁its ▁sap . ▁ ▁New ▁Zealand ▁flower ▁th ri ps ▁– ▁Th ri ps ▁obsc ur atus ▁– ▁fe eds ▁on ▁leaves , ▁flowers ▁and ▁young ▁fruit ▁of ▁k ō h ū h ū , ▁by ▁pier cing ▁plant ▁cells ▁and ▁su ck ing ▁their ▁contents . ▁ ▁F ung i ▁ ▁P yth ium ▁ir reg ul are ▁has ▁been ▁recorded ▁as ▁a ▁path ogen ▁of ▁k ō h ū h ū , ▁causing ▁fol iar ▁bl ight , ▁rot , ▁and ▁eventually ▁death . ▁ ▁A ▁recently ▁discovered ▁path ogen ▁of ▁k ō h ū h ū ▁that ▁caused ▁sw elling ▁of ▁tw igs ▁– ▁the ▁fung us ▁Els ino e ▁tak or op u ku ▁– ▁turned ▁out ▁to ▁be ▁a ▁newly ▁discovered ▁species ▁of ▁fung i . ▁The ▁fung us ▁was , ▁so ▁far , ▁only ▁found ▁in ▁association ▁with ▁k ō h ū h ū . ▁ ▁Cultural ▁uses ▁ ▁Garden ▁plant ▁▁ ▁K ō