Hawaiian Ecosystems at Risk project (HEAR) erythrina gall wasps Erythrina gall wasp (EGW):
status in Hawaii


What is the erythrina gall wasp (EGW)? The erythrina gall wasp (EGW) (Quadrastichus erythrinae) is a recently-discovered* non-native species in Hawaii (*April 2005 [Oahu]; August 2005 [Maui]). EGW affects the native wiliwili trees (Erythrina sandwicensis), as well as other non-native Erythrina species widely used for landscaping and windbreaks in Hawaii.
What's the status of EGW in Hawaii? Choose from the options on the right for information about the status of EGW on a particular island. (No specific information is available at this time about EGW in the Northwest Hawaiian Islands.)

General statewide information about the erythrina gall wasp is available in the online HDOA new pest advisory. Adobe Acrobat info

EGW status by island in Hawaii main Hawaiian Islands Big Island (Hawaii) Maui Lanai Kahoolawe Molokai Oahu Kauai Niihau
[NWHI]   [Niihau]   [Kauai]   [Oahu]   [Molokai]   [Lanai]   [Maui]   [Kahoolawe]   [Hawaii]
What can I do about EGW? Be informed! The erythrina gall wasp species page (from HEAR) contains links to additional online information, including images, scientific studies, press coverage, etc.

Stay up-to-date! Join EGW-L (the EGW e-mail discussion group), and/or periodically review the web-based information to which this page is linked.

Help with wiliwili seed collection! Help create a "seed bank" for the native wiliwili tree. There is an online wiliwili seed collection form Adobe Acrobat info with additional information. (Also online is a MS-Word version of this document. Microsoft Word document) Additionally, there is a New! downloadable wiliwili population location datasheet Excel spreadsheet recommended for use in conjunction with seed collection efforts.

More details about seed collection procedures are available in the online book Guide to Handling of Tropical and Subtropical Forest Seed. See in particular chapter 7, "Phytosanitary problems and seed treatment," and chapters 3-6. (Thanks to Alvin Yoshinaga for bringing this reference to our attention!)

How can I stay informed about EGW? To keep abreast of the latest discussion and announcements RE: the erythrina gall wasp (EGW)--particularly with respect to this species in Hawaii--subscribe to the EGW-L@HAWAII.EDU e-mail list.

EGW status by island in Hawaii

Northwest Hawaiian Islands
No information is currently available about the status of EGW in the Northwest Hawaiian Islands (NWHI). (NWHI are not mentioned in the document http://www.hawaiiag.org/hdoa/npa/npa05-03-EGW.pdf Adobe Acrobat info [accessed 13 September 2005, last updated "August 2005"].) If you have information about the status of EGW in the Northwest Hawaiian Islands, please let us know (webmaster@hear.org).

(NWHI EGW information was last updated 13SEP2005 based on information from PT [pt@hear.org].)

Niihau
No information is currently available about the status of EGW on Niihau. (Niihau is not mentioned in the document http://www.hawaiiag.org/hdoa/npa/npa05-03-EGW.pdf Adobe Acrobat info [accessed 13 September 2005, last updated "August 2005"].)

If you have information about the status of EGW on Niihau, please let us know (webmaster@hear.org).

(Niihau EGW information was last updated 13SEP2005 based on information from PT [pt@hear.org].)

Kauai
"On July 26 [2005], [the erythrina gall wasp] was found at Lihue Airport on Kauai...." (source: http://www.hawaiiag.org/hdoa/npa/npa05-03-EGW.pdf Adobe Acrobat info [accessed 13 September 2005, last updated "August 2005"])

If you have additional information about the status of EGW on Kauai, please let us know (webmaster@hear.org).

(Kauai EGW information was last updated 13SEP2005 based on information from HDOA.)

Oahu
"Samples of gall-damaged leaves and stems of the coral tree [sic], Erythrina variegata L., were first collected in Manoa, Oahu, on April 19, 2005, by a University of Hawaii (UH) graduate student." "...[G]all wasp damage has been found throughout the island of Oahu." (source: http://www.hawaiiag.org/hdoa/npa/npa05-03-EGW.pdf Adobe Acrobat info [accessed 13 September 2005, last updated "August 2005"])

If you have more current or additional information about the status of EGW on Oahu, please let us know (webmaster@hear.org).

(Oahu EGW information was last updated 13SEP2005 based on information from HDOA.)

Molokai
"On August 9 [2005], [the erythrina gall wasp] was detected on Molokai...." (source: http://www.hawaiiag.org/hdoa/npa/npa05-03-EGW.pdf Adobe Acrobat info [accessed 13 September 2005, last updated "August 2005"])

If you have additional information about the status of EGW on Molokai, please let us know (webmaster@hear.org).

(Molokai EGW information was last updated 13SEP2005 based on information from HDOA.)

Lanai
No information is currently available about the status of EGW on Lanai. (Lanai is not mentioned in the document http://www.hawaiiag.org/hdoa/npa/npa05-03-EGW.pdf Adobe Acrobat info [accessed 13 September 2005, last updated "August 2005"].)

If you have information about the status of EGW on Lanai, please let us know (webmaster@hear.org).

(Lanai EGW information was last updated 13SEP2005 based on information from PT [pt@hear.org].)

Maui
Updates RE: EGW status on Maui are available as follows: Also, a brief illustrated page about wiliwili on Maui is also available online.

If you have more current or additional information about the status of EGW on Maui, please let us know (webmaster@hear.org).

(Maui EGW information was last updated 13SEP2005 based on information from PT [pt@hear.org].)

Kahoolawe
No information is currently available about the status of EGW on Kahoolawe. (Kahoolawe is not mentioned in the document http://www.hawaiiag.org/hdoa/npa/npa05-03-EGW.pdf Adobe Acrobat info [accessed 13 September 2005, last updated "August 2005"].)

If you have information about the status of EGW on Kahoolawe, please let us know (webmaster@hear.org).

(Kahoolawe EGW information was last updated 14SEP2005 based on information from PT [pt@hear.org].)

Big Island (Hawaii)
"On July 21, 2005, gall wasp damage was reported from Kona on the Big Island...." (source: http://www.hawaiiag.org/hdoa/npa/npa05-03-EGW.pdf Adobe Acrobat info [accessed 13 September 2005, last updated "August 2005"])

If you have more current or additional information about the status of EGW on the Big Island (Hawaii), please let us know (webmaster@hear.org).

(Big Island [Hawaii] EGW information was last updated 13SEP2005 based on information from HDOA.)

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This page was created on 12 August 2005 by PT, and was last updated on 15 September 2005, last updated "August 2005" by PT. Valid HTML 4.01!