Description & Life cycle Assessment of risk High Priority Organism: Glassy Winged Sharpshooter (Homalodisca vitripennis) This highly polyphagous sucking pest, originating from the western USA, is spreading through the Pacific. Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) vectors Xylella fastidiosa, a bacterium causing Pierce's disease in grapevine. This version of the National Diagnostic Protocol (NDP) for Glassy Winged Sharpshooter, Homalodisca vitripennis (Germar) is current as at the date contained in the version control box on the front of … 1999) 1. Homalodisca vitripennis, the glassy-winged sharpshooter, poses a serious threat to grape production because of its ability to vector Xylella fastidiosa, the causal agent of Pierce’s disease.The glassy-winged sharpshooter is native to the southeastern United States, and over the last 20 yr has expanded its range into Texas and California and more distantly into French Polynesia. Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) (formally Homalodisca coagulata (Say) [Takiya et al., 2006]) is an exotic pest in California (USA) after successfully invading in the late 1980’s from its native range in the southeastern USA.This insect is an economically significant vector of the xylem-limited bacterium, Xylella fastidiosa, which causes … Homalodisca vitripennis (Germar) (Formerly known as Homalodisca coagulata) (Takiya et al. The development and reproductive biology of this economically important insect species were studied under greenhouse and laboratory conditions during the spring-summer and fall-winter and at different rearing densities. Introduction. Some varieties of leafhopper lay their eggs on the underside of leaves as well. While it varies from species to species, in general, the leafhopper life cycle follows a few stages. Native To: Southeastern U.S. (Hoddle et al. What is a glassy winged sharpshooter? 2006) Common Name: Glassy-winged sharpshooter (GWSS), xylophagous leafhopper. Credits: Tracy Conklin, University of ... Life Cycle The female glassy-winged sharpshooter lays her Its known host range is vast, including more than 100 plant It can transmit 2003) Date of U.S. Introduction: Introduced to California by 1990 (Blua et al. 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 - … f.) to feed on during a 21-d trial, 100% mortality occurred at 0.1, 3.2, and 40.1°C, whereas an average of 74–76% of adults survived in the 13.2–24.5°C range. Although the pests rarely cause immediate damage, they excrete copious amounts of sticky liquid that hardens on fruit, and also gives foliage a pale, whitewashed appearance. When provided a host plant (Citrus limon L. Burm. Each egg of Homalodisca vitripennis (Germar), the glassy-winged sharpshooter, now has single Gonatocerus pupae inside it, which will soon eclose to an adult wasp. This harmful pest, native to the Southeastern United States and Mexico, is a type of large leafhopper that feeds on fluids in tissues of various plants. Homalodisca vitripennis (Germar), in the southeast United States as of 2004. Survival of the glassy-winged sharpshooter, Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae), was studied under various constant temperatures and feeding conditions. The glassy-winged sharpshooter produces one to two generations per year. Life Cycle The female glassy-winged sharpshooter lays her eggs in groups of three to 28 eggs just under the epidermis layer of ... Homalodisca vitripennis feeds in the xylem, the water conducting tissue of both herbaceous and woody plants. Photograph by Chris Tipping, University of Florida. First, the female will place leafhopper eggs inside of plant material, generally leaves. Abstract. Life History Studies of Homalodisca vitripennis (Hemiptera: Cicadellidae), a Vector of Pierce's Disease of Grapevine January 2010 Annals of the Entomological Society of America 103(1):57-65