Quadrastichus erythrinae (Eulophidae)

What's new?

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

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

Taxonomy & nomenclature

Pest alerts

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

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

Wasp swap: A relief for wiliwili? (Maui News, 18 June 2007)
A predatory wasp in Africa may be the solution to the gall wasp infestation that has wreaked havoc on wiliwili trees in Hawaii. The predator is now being studied as a potential biocontrol of the gall wasp.

Erythrina gall wasp 
"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.

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

Discussion forums

Images

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 (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.

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 
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.

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."

Wasp swap: A relief for wiliwili? (Maui News, 18 June 2007)
A predatory wasp in Africa may be the solution to the gall wasp infestation that has wreaked havoc on wiliwili trees in Hawaii. The predator is now being studied as a potential biocontrol of the gall wasp.

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

Efforts to control erythrina gall wasps fail
"The remedy to control the alien wasps that have been ravaging wiliwili trees continues to elude biologists who have learned that pruning the affected portions doesn't help at all," reports The Maui News (27 September 2005).

Alien wasp may doom the wiliwili
"An alien wasp discovered on Maui only a week ago has been spreading like an explosion of confetti and could spell doom for the cherished wiliwili trees" (Valerie Monson, The Maui News, 08AUG2005).

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

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).

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.

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).

Full-text articles

Outbreak of erythrina gall wasp (Hymenoptera: Eulophidae) on Erythrina spp. (Fabaceae) in Taiwan 
"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)

Other resources

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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The template for this page was created on 15 March 2004 by EMS, and was last updated on 20 February 2006 by PT. The content of this page was last regenerated on (or after) 31 August 2007 by PT.