Cheou D. 2002. Adult glassy-winged sharpshooter on leaf surface. The glassy-winged sharpshooter (GWSS) (Homalodisca vitripennis) is a xylem feeding leafhopper that causes direct damage to grapevines through its feeding activities. The Glassy-winged Sharpshooter (GWSS), likely introduced from the southeastern U.S. as eggs on nursery stock, was first observed in Orange and Ventura counties in 1989. Scientific Name: Homalodisca vitripennis (Germar) (Formerly known as Homalodisca coagulata) (Takiya et al. Glassy-Winged Sharpshooter. It obtains its nutrients by feeding on the xylem fluid of plants. Introduction of glassy-winged sharpshooter could result in serious damage to vineyards in Oregon and cause trade restrictions on many other host plants. The Glassy-Winged Sharpshooter (GWSS), Homalodisca vitripennis (Cicadellidae family), vectors the bacterium Xylella fastidiosa (Xf).A subspecies of Xf, also called fastidiosa, causes Pierce’s Disease (PD) in vinifera grape varieties.. GWSS is native to the southeastern US and northeastern Mexico. The Glassy-Winged Sharpshooter is a large leafhopper that is native to the Southeastern part of the United States and New Mexico. Incursion of glassy-winged sharpshooter Homalodisca coagulata in French Polynesia. However, the greatest threat posed by this Parasitism of the glassy-winged sharpshooter, Homalodisca coagulata (Homoptera : Cicadellidae): Functional response and superparasitism by Gonatocerus ashmeadi (Hymenoptera : Mymaridae). One such disease of grapes most often seen in the South is Pierce’s disease. 2006) Common Name: Glassy-winged sharpshooter (GWSS), xylophagous leafhopper. The glassy-winged sharpshooter (GWSS), Homalodisca vitripennis, is a relatively large leafhopper belonging to the Cicadellidae family, measuring about 0.5 inches long. Wide host range (200+ species) •grapevines, citrus, olive, ornamental trees and shrubs, weeds Causes little direct damage Transmits Xylella fastidiosa, which cases Pierce’s disease Castle and Naranjo (2008) found differences in spatial TPL between adult and nymph glassy-winged sharpshooters on citrus in Arizona and also between samplers [32]. The glassy-winged sharpshooter (Homalodisca vitripennis), a vector of Pierce’s disease, discolors citrus fruit reducing marketability. Sharpshooter is a term commonly used to describe a group of leafhoppers in the family Cicadellidae. There have been several explanations for the use of this term. However, this pest is currently invasive in Alabama, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Texas, and Hawaii. The glassy-winged sharpshooter produces one to two generations per year. Glassy-winged sharpshooter on a grape leaf - Peggy Greb USDA, Agricultural Research Service. Keep reading to learn more about Pierce’s disease in grapes and what steps can be taken to prevent or treat this disease. Glassy-winged sharpshooter, Homalodisca vitripennis Xylem-sap feeder Native to southeastern U.S. Biological Control 37 (1): 119-129. Nothing is as frustrating as growing grapes in the garden only to find they have succumbed to problems such as disease. What is the glassy-winged sharpshooter? Riley and Howard (1893) first used "sharpshooter" to describe the feeding damage of the glassy-winged sharpshooter, Homalodisca vitripennis (Germar), on cotton. Glassy-winged sharpshooter is not known to be established in Oregon. Once in their two-month life span, female glassy-winged sharpshooters lay or oviposit eggs side-by-side in a slightly curved 'blister-like' raft below the epidermis of plant leaves, usually in masses of 10 -12 eggs, but 20 - … Is a term commonly used to describe a group of leafhoppers in garden. 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