First Record of Gonatocerus triguttatus (Hymenoptera: Mymaridae) from Eggs of Homalodisca coagulata (Homoptera: Cicadellidae) with Notes on the Distribution of the Host

Introduced parasitic wasps could control glassy-winged sharpshooter

“…2), the first in the spring when an average of 12% of GWSS eggs were parasitized, and the second in the summer when an average of 19% of eggs were parasitized. This summer figure contrasts with reported parasitism rates of up to 100% in some regions, such as Florida (Triapitsyn and Phillips 2000). A possible explanation for this discrepancy in parasitism is that data being collected are "snapshots" from any given season.…”

“…The most common natural enemies associated with GWSS eggs in the southeastern United States are all mymarid wasps: Gonatocerus ashmeadi Girault, G. triguttatus Girault, G. morrilli Howard and G. fasciatus Girault (Triapitsyn and Phillips 2000). In the late 1990s, in an effort to use natural enemies to control GWSS populations in Southern California, UC and CDFA imported these four parasitoids from southeastern states, cleared them through quarantine and introduced them into California urban and agricultural areas.…”

Successful spread of a biocontrol agent reveals a biosecurity failure: elucidating long distance invasion pathways for Gonatocerus ashmeadi in French Polynesia

“…Homalodisca vitripennis is native to the southeast USA and northeast Mexico (Sorensen and Gill 1996;Triapitsyn and Phillips 2000). This pest invaded French Polynesia in 1999 (Secretariat of the Pacific Community 2002), Hawaii in 2004 (Hoover 2004), Easter Island in 2005(Sandra Ide personal communication 2005, and the Cook Islands in 2007 (Maja Poeshco personal communication 2007).…”

Biological Control of Parasites

“…In the southeastern USA and northeastern Mexico, glassy-winged sharpshooter eggs are parasitized by several species of mymarid and trichogrammatid parasitoids, including Gonatocerus ashmeadi Girault, G. triguttatus Girault, G. morrilli Howard and G. fasciatus Girault. Virtually, all species of parasitoid in the family Mymaridae (order: Hymenoptera) are the most common natural enemies associated with H. vitripennis eggs in the southeastern United States [122].…”