Quadrastichus erythrinae
(Eulophidae)
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Quadrastichus erythrinae
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| HEAR home > species info > invertebrates > Quadrastichus erythrinae (Eulophidae) |
The wasp has devastated exotic ornamental erythrina plantings. Its galls caused defoliation and eventual death to thousands of Indian coral trees, Erythrina variegata var. orientalis. The threat to native wiliwili (Erythrina sandwicensis) has been particularly alarming. The erythrina gall wasp (Quadrastichus erythrinae) was discovered on Oahu in 2005, and quickly spread throughout Hawaii.
Quadrastichus erythrinae description and ecology from GISD (ISSG)
A species description and information about the ecology of Quadrastichus erythrinae as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).
Erythrina gall wasp - new pest advisory 
Erythrina gall wasp's description, images, distribution, and impacts are in this pest advisory from the Hawaii Department of Agriculture.
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.
Quadrastichus erythrinae impact information from GISD (ISSG)
Impact information regarding Quadrastichus erythrinae as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).
Saving the wiliwili: A tiny wasp from Tanzania may be the last, best hope for one of Hawaii's most important native trees
Images and description of the impacts of the erythrina gall wasp on native wiliwili trees on Maui, and the release of the biocontrol wasp, are from Maui Magazine (March, 2010).
Non-target evaluation of a promising natural enemy of the erythrina gall wasp (Quadrastichus erythrinae) (text not available)
This paper on promising biocontrol of erythrina gall wasp presented at the 2007 Entomological Society Meeting is not available.
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).
Management of the invasive Erythrina gall wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae) on native and landscape Erythrina
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
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.
Quadrastichus erythrinae management information from GISD (ISSG)
Management information for Quadrastichus erythrinae as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).
Erythrina gall wasp (EGW) (Quadrastichus erythrinae) management information from ISSG/GISD
public domain
HDOA releases biocontrol insect to control gall wasp
About 500 Eurytoma erythrinae wasps, natural predators of the erythrina gall wasp, were released on Oahu by the Hawaii Department of Agriculture (HDOA) Plant Pest Control Branch (news release, HDOA 11/25/2008).
2006 Annual Report for Hawaii Department of Agriculture (HDOA) Plant Pest Control Branch
New insect introductions and projects involving invasive species are reviewed in Appendix IV of the 2006 HDOA annual report.
A new species of Eurytoma (Hymenoptera: Eurytomidae) attacking Quadrastichus spp. (Hymenoptera: Eulophidae) galling Erythrina spp. (Fabaceae),
with a summary of African Eurytoma biology and species checklist
Eurytoma erythrinae Gates and Delvare, a new species, is described and illustrated.
Managing the Erythrina Gall Wasp problem in Hawaii with classical biological control (presentation)
A presentation on the erythrina gall wasp problem in Hawaii and biocontrol agents is provided by the Hawaii Department of Agriculture. Excellent images and data are presented.
A new parasitoid of the erythrina gall wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae)
Aprostocetus exertus La Salle (Hymenoptera: Eulophidae: Tetrastichinae) is described as a parasitoid of the invasive erythrina gall wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae: Tetrastichinae). The description is
based on material originally collected in Tanzania and South Africa. This species is described because of its potential as
a biological control agent against the erythrina gall wasp.
Quadrastichus erythrinae images (Starr)
Images of Quadrastichus erythrinae (Eulophidae) (Erythrina gall wasp are provided by from Forest and Kim Starr.
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.
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
2005 Annual Report for Hawaii Department of Agriculture (HDOA)
Projects involving invasive species are reviewed in the 2005 HDOA annual report.
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 (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]).
Quadrastichus erythrinae worldwide distribution from GISD (ISSG)
Worldwide distribution information about Quadrastichus erythrinae is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).
HDOA releases biocontrol insect to control gall wasp
The release of the parasite Eurytoma erythrinae to control the erythrina gall wasp is announced by the Hawaii Department of Agriculture. An overview of the process is presented (11/25/2008).
HDOA releases biocontrol insect to control gall wasp
About 500 Eurytoma erythrinae wasps, natural predators of the erythrina gall wasp, were released on Oahu by the Hawaii Department of Agriculture (HDOA) Plant Pest Control Branch (news release, HDOA 11/25/2008).
Bugs readied for eco-battle
The erythrina gall wasp, nettle caterpillar, and Madagascar fireweed are Hawaii pests that may be combatted by biocontrol agents if Hawaii receives federal approval for their release (Honolulu Advertiser, 5/11/2008).
Tackling the invasive species crisis in Hawaii
University of Hawaii College of Tropical Agriculture's strategies to combat various invasive species in Hawaii are reviewed (CTAHR Research News, Feb. 2008).
Tree failure by suspected Erythrina gall wasps
An Erythrina variegata tree's fallen branch lead observers in China to suspect damage from the Erythrina gall wasp, which is prevalent in China and south Asia.
Wiliwili die-off giving Hawaii willies
The erythrina gall wasp is devastating groves of wiliwili trees on all of the Hawaiian islands.
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).
Wasp swap: a relief for wiliwili?
"Researchers have identified a predatory wasp in Africa that may be the solution to the gall wasp infestation that has wreaked havoc on Hawaii's wiliwili trees. If further testing confirms that it would be safe to introduce the predator, that could come as soon as September."
Dying trees cost $1M a year
This entry was automatically generated by the Paradox script ITISPLTS.SSL.
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
Managing the Erythrina Gall Wasp problem in Hawaii with classical biological control (presentation)
A presentation on the erythrina gall wasp problem in Hawaii and biocontrol agents is provided by the Hawaii Department of Agriculture. Excellent images and data are presented.
Quadrastichus erythrinae contacts from GISD (ISSG)
Contact information for experts on Quadrastichus erythrinae as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).
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".
Quadrastichus erythrinae references from GISD (ISSG)
References regarding Quadrastichus erythrinae as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).
Erythrina gall wasp (EGW) (Quadrastichus erythrinae): references and links from ISSG/GISD
taxonomic nomenclature, ITIS, Operculina ventricosa
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