Erythrina Gall Wasp Quadrastichus erythrinae Kim Photo MM Yang

Erythrina Gall Wasp Erythrina variegata Tigers Claw, Indian Coral Tree, Wiliwili-haole

Erythrina Gall Wasp  Described as a new species in 2004 from specimens from Singapore, Mauritius, and Reunion Islands  Then found in Taiwan, China, India, Guam, and Okinawa  Discovered on Oahu in April 2005, on Molokai & Maui in August 2005, on Kahoolawe & Lanai in October 2005.

Erythrina Wasp Host Range  Erythrina, family Fabaceae  In Hawaii:  Erythrina variegata  Erythrina variegata - tall wiliwili  Erythrina crista-galli  Erythrina sandwicensis (native),

Erythrina Wasp Host Range  On the mainland US and Mexico:  Erythrina americana  Erythrina bidwillii  Erythrina caffra- Kaffirboom Coral Tree  Erythrina coralloides- Naked Coral Tree  Erythrina falcata  Erythrina humeana – Natal Coral Tree  Erythrina lysistemon

Erythrina Biology MM Wang Mating MaleFemale Female preparing for oviposition

Erythrina Wasp Damage E. bidwillii (healthy)

Erythrina Wasp Control  Seed collection of Erythrina species has begun. Seeds are being stored at Ft. Collins, CO.  Insecticidal injections and drenches have been tried in Taiwan and Hawaii. Chemical controls have not proven effective in Taiwan. Biocontrol agents are being sought.