The acacia psyllid (Psylla uncatoides), first found in Hawaii in 1966, feeds and breeds in the new
growth of koa. This psyllid also has become a serious
pest of the closely related koaia (Acacia koaia).
Feeding can result in the accumulation of black sooty mold on koa leaves and
phyllodes.
Back to Acacia koa
Pest and Disease Image Gallery