Pest of the Month October 2011 – Ohia Psyllid

 Ohia Psyllid (several native Hawaiian species of the Family Psyllidae)

  • Host: Ohia 
  • Distribution: Native to Hawaii
  • Symptoms: Circular, conical, or convex galls on leaves, particularly new growth
  • Management:  Biological control by other native species (Sympiesis sp.)  Because the ohia psyllids are native insects, avoid the use of pesticides as they or their parasites could become threatened or extinct.

Source:   Information from The Hawaiian Planters’ Record, published by the Hawaiian Sugar Planters’ Association, Vol. XVII, July to December 1917, pp. 176-178.

Ohia psyllid damage. Photo by Dr. Scot Nelson, UH CTAHR.