Quadrastichus erythrinae

Quadrastichus erythrinae Kim, 2004, (quadra=four, stichus=line, erythrinae=of erythrina) is a small parasitoid wasp belonging to the family Eulophidae, but also a secondary phytophage by way of inducing galls on the leaves, stems, petioles and young shoots of various Erythrina species.

Quadrastichus erythrinae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Eulophidae
Genus: Quadrastichus
Species:
Q. erythrinae
Binomial name
Quadrastichus erythrinae
Kim, 2004

Q. erythrinae was identified in 2004 in Erythrina galls collected in Singapore, Mauritius and Réunion. Eurytoma is a genus of wasps belonging to the family Eurytomidae of which some are parasitoids of Quadrastichus species; a parasitoid from the Eulophidae is Aprostocetus exertus.[1][2]

The worldwide spread of Erythrina gall wasp (EGW) stem from a location in East Africa. Erythrina gall wasp have become an invasive species in Hawaii, overall threatening much of Hawaii's biodiversity. It was first observed on the island of Oahu and later spread amongst other neighboring islands with major infestations on endemic ''E. sandwicensis'' and ''E. variegata''. It was thus treated with Eurytoma erythrinae which proved to be very effective in reducing the population of Erythrina gall wasps.[3]

References
  1. Salle, John La; Ramadan, Mohsen; Kumashiro, Bernarr R. (27 April 2009). "A new parasitoid of the Erythrina Gall Wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae)". Zootaxa. 2083 (1): 19–26. doi:10.11646/zootaxa.2083.1.2.
  2. Gates, M.; Delvare, G. (16 April 2008). "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". Zootaxa. 1751 (1): 1–24. doi:10.11646/zootaxa.1751.1.1.
  3. Kaufman, Leyla V.; Yalemar, Juliana; Wright, Mark G. (1 March 2020). "Classical biological control of the erythrina gall wasp, Quadrastichus erythrinae, in Hawaii: Conserving an endangered habitat". Biological Control. 142: 104161. doi:10.1016/j.biocontrol.2019.104161.
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