Hawaiian Ecosystems at Risk project (HEAR)

Quadrastichus erythrinae
(Eulophidae)

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What's new? Species description or overview Taxonomy & nomenclature Pest alerts Impacts
Control methods Discussion forums Images Distribution In the news
Full-text articles Presentations Experts Other resources  


What's new?

Erythrina gall wasp in Florida (first report in continental U.S.): pest alert
Galls of the eulophid erythrina gall wasp, Quadrastichus erythrinae Kim 2004, were first collected in Florida by Edward Putland and Olga Garcia (Florida Department of Agriculture, Division of Plant Industry) on Erythrina variegata L. in Miami-Dade County at the Miami Metro Zoo on October 15, 2006. The October [ed.: 2006] collection in Miami is the first record of this pest in the continental U.S. Initial limited survey has detected many suspect erythrina gall wasp-infested coral trees throughout Miami-Dade County. [HEAR ed.: excerpts from article]

Erythrina gall wasp: status in Hawaii
The current status of the erythrina gall wasp (EGW; Quadrastichus erythrinae) invasion in Hawaii--along with distribution maps by island, when available--is available online.


Species description or overview

Quadrastichus erythrinae ecology
Quadrastichus erythrinae common names, description, habitat, uses, management, impacts and invasion pathways are provided by ISSG (Invasive Species Specialist Group).

Erythrina gall wasp (EGW) (Quadrastichus erythrinae) information from ISSG/GISD
Nomenclatural information about Oxalis corniculata is provided by ITIS.


Taxonomy & nomenclature

ITIS nomenclature info for Quadrastichus erythrinae
Nomenclatural information about Quadrastichus erythrinae is provided by ITIS.


Pest alerts

HDOA Erythrina gall wasp new pest advisory View info about Adobe Acrobat PDF format
An Erythrina gall wasp pest advisory has been issued by the Hawaii Department of Agriculture.

Erythrina gall wasp - new pest advisory View info about Adobe Acrobat PDF format
Erythrina gall wasp's description, images, distribution, and impacts are in this pest advisory from the Hawaii Department of Agriculture.

Erythrina gall wasp in Florida (first report in continental U.S.): pest alert
Galls of the eulophid erythrina gall wasp, Quadrastichus erythrinae Kim 2004, were first collected in Florida by Edward Putland and Olga Garcia (Florida Department of Agriculture, Division of Plant Industry) on Erythrina variegata L. in Miami-Dade County at the Miami Metro Zoo on October 15, 2006. The October [ed.: 2006] collection in Miami is the first record of this pest in the continental U.S. Initial limited survey has detected many suspect erythrina gall wasp-infested coral trees throughout Miami-Dade County. [HEAR ed.: excerpts from article]


Impacts

Wiliwili on Maui: threatened by the Erythrina gall wasp
Hawaiian Ecosystems at Risk project (HEAR); webmaster: Philip A. Thomas

Quadrastichus erythrinae impacts
General and location specific impacts of Quadrastichus erythrinae are provided by ISSG (Invasive Species Specialist Group).

Dying trees cost $1M a year
This entry was automatically generated by the Paradox script ITISPLTS.SSL.

Erythrina gall wasp (EGW) (Quadrastichus erythrinae): information on impacts (from ISSG/GISD)
Nomenclatural information about Oxalis debilis is provided by ITIS.


Control methods

Erythrina gall wasp - 2006 report
The Erythrina Gall Wasp Biocontrol Project was initiated in 2005 to identify potential biocontrol agents for the wasp. The Hawaii Department of Agriculture reports on efforts to collect promising parasitoid species.

Quadrastichus erythrinae management
General and location specific management information for Quadrastichus erythrinae is provided by ISSG (Invasive Species Specialist Group).

Erythrina gall wasp View info about Adobe Acrobat PDF format
"One of the latest invaders reported on April 19, 2005 is the Erythrina Gall Wasp, Quadrastichus erythrinae. As its name implies, it attacks Erythrina also known as Wiliwili or the Indian Coral Trees." Erythrina Gall Wasp.

Management of the invasive Erythrina gall wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae) on native and landscape Erythrina View info about Adobe Acrobat PDF format
Chemical methods for controlling the Erythrina gall wasp are summarized in this final research report from University of Hawaii entomologist Arnold H. Hara (2007)

Update on control of the Erythrina gall wasp View info about Adobe Acrobat PDF format
Chemical and biological management of the Erythrina gall wasp and alternative species for landscape are reviewed in this presentation from the University of Hawaii (2008).

Wiliwili preservation at the D.T. Fleming Arboretum at Puu Mahoe, Maui
Native wiliwili (Erythrina sandwicensis) trees are protected from the Erythrina gall wasp by regular injections of the pesticide "Merit".

Google search for biocontrol information regarding the erythrina gall wasp
The latest erythrina gall wasp biocontrol information posted on the internet in the last six months is the result of this google search.

Erythrina gall wasp (EGW) (Quadrastichus erythrinae) management information from ISSG/GISD
public domain


Discussion forums

Erythrina gall wasp (EGW) (Quadrastichus erythrinae) e-mail discussion forum
An e-mail discussion forum RE: the erythrina gall wasp (EGW) (Quadrastichus erythrinae)--including online archives--is available for public subscription.


Images

Erythrina gall wasp image
EM image of Erythrina gall wasp and description are provided on this stock scientific photo site.

Images of erythrina gall wasp (EGW) (Quadrastichus erythrinae)
Images of erythrina gall wasp (EGW) (Quadrastichus erythrinae) and damage it causes are presented here.

Erythrina photo-monitoring on Maui
Some images of Erythrina trees at various locations on Maui are presented online as an attempt to aid in monitoring the progress of the "Erythrina gall wasp" (EGW), Quadrastichus erythrinae.


Distribution

Erythrina gall wasp in Florida (first report in continental U.S.): pest alert
Galls of the eulophid erythrina gall wasp, Quadrastichus erythrinae Kim 2004, were first collected in Florida by Edward Putland and Olga Garcia (Florida Department of Agriculture, Division of Plant Industry) on Erythrina variegata L. in Miami-Dade County at the Miami Metro Zoo on October 15, 2006. The October [ed.: 2006] collection in Miami is the first record of this pest in the continental U.S. Initial limited survey has detected many suspect erythrina gall wasp-infested coral trees throughout Miami-Dade County. [HEAR ed.: excerpts from article]

Erythrina gall wasp (EGW) (Quadrastichus erythrinae) reported in Thailand
Erythrina gall wasp (EGW) (Quadrastichus erythrinae) has now been reported from Thailand, according to this PESTNET posting.

EGW in Guam
Published as 1996

Status in Hawaii of erythrina gall wasp (EGW) (Quadrastichus erythrinae)
The status in Hawaii (USA) of the erythrina gall wasp (EGW) (Quadrastichus erythrinae) is presented by island.

Erythrina gall wasp: status in Hawaii
The current status of the erythrina gall wasp (EGW; Quadrastichus erythrinae) invasion in Hawaii--along with distribution maps by island, when available--is available online.

Quadrastichus erythrinae distribution
Quadrastichus erythrinae distribution records in alien ranges are available by country, from ISSG (Invasive Species Specialist Group).

Erythrina photo-monitoring on Maui
Some images of Erythrina trees at various locations on Maui are presented online as an attempt to aid in monitoring the progress of the "Erythrina gall wasp" (EGW), Quadrastichus erythrinae.

Erythrina gall wasp Quadrastichus erythrinae, yet another invasive pest new to India View info about Adobe Acrobat PDF format
Nomenclatural information about Pimenta dioica is provided by ITIS.

Erythrina gall wasp (EGW) (Quadrastichus erythrinae) distribution information from ISSG/GISD
Information about the worldwide distribution of the erythrina gall wasp (EGW) (Quadrastichus erythrinae) is available from the Global Invasive Species Database (GISD) (IUCN Invasive Species Specialist Group [ISSG]).


In the news

Tiny wasps killing Hawaiian trees
Wasps killing thousands of wiliwili trees are one of the most serious epidemics ever caused by an invasive species in Hawaii.

Import ban to affect shipments to Hawaii florists
To prevent imports of the ohia diease Puccinia psidii, the Hawaii Department of Agriculture has banned plants from the Myrtaceae family from California, Florida and South America that could be disease hosts (Honolulu Advertiser, 9/6/2007).

Dying trees cost $1M a year
This entry was automatically generated by the Paradox script ITISPLTS.SSL.

Wasps head south; Queensland could be next
Erythrina gall wasps (EGW; Quadrastichus erythrinae) could threaten Australia, according to this Canberra Times article (03 September 2006).

Scientists step up battle to save wiliwili
Current efforts to manage erythrina gall wasp (Quadrastichus erythrinae) infestations in Hawaii are outlined in this Honolulu Advertiser news article.

Predatory wasp (Quadrastichus erythrinae) faces a determined battle (article)
"State botanists and entomologists are fighting to save native wiliwili and coral trees used in landscaping and agriculture from an introduced pest, the Erythrina gall wasp", reports the Honolulu Star-Bulletin (Dec. 3, 2005).

Alien wasp may doom the wiliwili, 8 August 2005
The discovery of the erythrina gall wasp on Maui in 2005 alarmed botanists and biologists concerned for native wiliwili stands (Maui News).

Tiny wasp may kill off native trees
"Keeping tabs on invasive species" is a Honolulu Advertiser article concerning invasive species problems in Hawaii, and some groups that are doing something about them.

Tiny wasp may kill off native trees
public domain


Full-text articles

A New Species of Quadrastichus (Hymenoptera: Eulophidae): A Gall-inducing Pest on Erythrina (Fabaceae) View info about Adobe Acrobat PDF format
"Quadrastichus erythrinae Kim sp.n. is described from Singapore, Mauritius and Reunion. This species forms galls on the leaves, stems, petioles and young shoots of Erythrina variegata and [Erythrina fusca] in Singapore, on the leaves of [Erythrina indica] in Mauritius, and on Erythrina sp. in Reunion. It can cause extensive damage to the trees." (ed.: excerpted from abstract)

Outbreak of erythrina gall wasp (Hymenoptera: Eulophidae) on Erythrina spp. (Fabaceae) in Taiwan View info about Adobe Acrobat PDF format
"The erythrina gall wasp was first recorded damaging coral trees, Erythrina spp. (Fabaceae), in southern Taiwan in 2003; since then it has rapidly spread throughout the island on various species of Erythrina. Galls form on the leaves, petioles, young shoots, and stems. Obvious swelling can be seen on infected tissue parts, and severe infestations cause curling of young shoots, defoliation, and death of the tree. At present, 5 species and a subspecies of coral trees have been recorded as suitable hosts. The gall inducer is Quadrastichus erythrinae Kim (Eulophidae), newly reported in Singapore, Mauritius, and Réunion, and it has also caused severe damage in those areas. In this research, we report the symptoms, the distribution of infested coral trees in Taiwan, identification characteristics of the galler, and pest control suggestions." (ed.: excerpted from abstract)

Management of the invasive Erythrina gall wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae) on native and landscape Erythrina View info about Adobe Acrobat PDF format
Chemical methods for controlling the Erythrina gall wasp are summarized in this final research report from University of Hawaii entomologist Arnold H. Hara (2007)


Presentations

Update on control of the Erythrina gall wasp View info about Adobe Acrobat PDF format
Chemical and biological management of the Erythrina gall wasp and alternative species for landscape are reviewed in this presentation from the University of Hawaii (2008).


Experts

Quadrastichus erythrinae contacts
Quadrastichus erythrinae contacts provide information and advice (Invasive Species Specialist Group-ISSG).


Other resources

References for Quadrastichus erythrinae
Quadrastichus erythrinae references are provided by ISSG (Invasive Species Specialist Group).

Wiliwili preservation at the D.T. Fleming Arboretum at Puu Mahoe, Maui
Native wiliwili (Erythrina sandwicensis) trees are protected from the Erythrina gall wasp by regular injections of the pesticide "Merit".

Erythrina gall wasp (EGW) (Quadrastichus erythrinae): expert contact information from ISSG/GISD
USDA/ITIS (http://www.itis.usda.gov/)

Erythrina gall wasp (EGW) (Quadrastichus erythrinae): references and links from ISSG/GISD
taxonomic nomenclature, ITIS, Operculina ventricosa


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