Glassy-Winged Sharpshooter, Homalodisca coagulata (Say) (Hemiptera: Cicadellidae)

2012 ◽  
Keyword(s):  
Homalodisca Coagulata

Homalodisca coagulata. [Distribution map].

2005 ◽  
Author(s):  
Keyword(s):  
North Carolina ◽  
South Carolina ◽  
North America ◽  
Geographical Distribution ◽  
French Polynesia ◽  
Distribution Map ◽  
Homalodisca Coagulata ◽  
New Distribution

Abstract A new distribution map is provided for Homalodisca coagulata (Say) Hemiptera: Auchenorrhyncha: Cicadellidae Hosts: Polyphagous. Information is given on the geographical distribution in NORTH AMERICA, Mexico, USA, Alabama, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Texas, OCEANIA, French Polynesia.

scholarly journals Host plant testing of the spittle bug carystoterpa fingens by stylet penetration behaviour

2007 ◽  
Vol 60 ◽  
pp. 78-84
Author(s):  
W.R.M. Sandanayaka ◽  
A. Chhagan ◽  
P. Ramankutty
Keyword(s):  
Host Plant ◽  
Brassica Oleracea ◽  
Feeding Behaviour ◽  
Electrical Penetration Graph ◽  
Host Preferences ◽  
Epg Technique ◽  
Homalodisca Coagulata ◽  
In The Wild ◽  
Penetration Behaviour

Carystoterpa fingens (Walker) is an endemic xylem feeder It was chosen as a model insect for the glassy winged sharp shooter (Homalodisca coagulata (Say)) The electrical penetration graph (EPG) technique was used to measure realtime stylet penetration and feeding behaviour of 48 adult C fingens on four plant types hebe (Hebe pubescens) rengarenga lily (Arthropodium cirratum) wild iris (Dietes bicolor) and cabbage (Brassica oleracea) over 12 days EPG waveforms were recorded for 12 hours and the duration of the main penetration events (pathway ingestion and nonprobing phases) of the insects were analysed to compare host preferences There were no significant differences in the duration of ingestion indicating that all the plants were potential hosts for C fingens Insects on hebe showed the shortest nonprobing time suggesting that hebe was the most preferred host as expected from observations in the wild

scholarly journals Transmission of Xylella fastidiosa, Causal Agent of Citrus Variegated Chlorosis, by the Glassy-Winged Sharpshooter, Homalodisca coagulata

Plant Disease ◽  
2006 ◽  
Vol 90 (5) ◽  
pp. 567-570 ◽  
Author(s):  
V. D. Damsteegt ◽  
R. H. Brlansky ◽  
P. A. Phillips ◽  
Avijit Roy
Keyword(s):  
Xylella Fastidiosa ◽  
The United States ◽  
Citrus Variegated Chlorosis ◽  
Homalodisca Coagulata ◽  
Causal Pathogen ◽  
Polymerase Chain ◽  
Species Specific ◽  
Transmission Studies ◽  
Test Plants ◽  
Important Disease

Citrus variegated chlorosis (CVC) is an economically important disease of citrus in Brazil and Argentina. The causal pathogen is a strain of Xylella fastidiosa transmitted by several sharpshooter species. The glassy-winged sharpshooter (GWSS), Homalodisca coagulata, has become an important new pest of citrus and grapevines in California, where it transmits X. fastidiosa strains to several crops including grapes, oleander, and almonds. Transmission studies over a 3-year period at the USDA BSL3-P containment facility at Fort Detrick, MD, utilizing California field-collected GWSS, a Brazilian strain of CVC, and Madam Vinous sweet orange seedlings, have shown a consistent although low level of transmission of CVC. Test plants were observed for CVC symptoms, analyzed by polymerase chain reaction using species-specific primers for X. fastidiosa, membrane entrapment immunofluorescence, and scanning electron microscopy. X. fastidiosa was not detected in field-collected GWSS but was detected in GWSS following feeding on CVC-infected source plants. Transmission of the CVC strain of X. fastidiosa by GWSS increases the risk of establishment of CVC in the United States if it were introduced.

Susceptibility of Immature Stages of Homalodisca coagulata (Hemiptera: Cicadellidae) to Selected Insecticides

2006 ◽  
Vol 99 (5) ◽  
pp. 1805-1812 ◽  
Author(s):  
Nilima Prabhaker ◽  
S. J. Castle ◽  
Nick C. Toscano
Keyword(s):  
Immature Stages ◽  
Homalodisca Coagulata

Evaluation and Molecular Characterization of Beauveria bassiana for the Control of the Glassy-winged Sharpshooter (Homoptera: Cicadellidae) in California

2008 ◽  
Vol 43 (2) ◽  
pp. 241-246 ◽  
Author(s):  
Surendra K. Dara ◽  
Michael R. McGuire ◽  
Mauricio Ulloa ◽  
Harry K. Kaya
Keyword(s):  
Beauveria Bassiana ◽  
Genetic Relatedness ◽  
Plant Diseases ◽  
Insect Vector ◽  
Homalodisca Coagulata ◽  
Important Pest ◽  
Spissistilus Festinus ◽  
Fungus Beauveria Bassiana ◽  
Almond Leaf Scorch

The glassy-winged sharpshooter, Homalodisca coagulata (Say), is an important pest on grapes, citrus, almonds and other commercial crops in California as it is a vector of Xylella fastidiosa Wells, a bacterium that causes Pierce's disease in grapes, citrus variegated chlorosis, almond leaf scorch and other plant diseases. Various entomopathogenic fungi isolated from natural infections of H. coagulata, its habitats and other insect hosts were evaluated against this insect vector. Based on these studies, 3 isolates of the hyphomycetous fungus, Beauveria bassiana (Balsamo) Vuillemin, were selected for further evaluation. Two of these were California isolates, one each from the three-cornered alfalfa hopper, Spissistilus festinus (Say), and soil from H. coagulata habitat, and the third was a Texas isolate from natural infections of H. coagulata. All three were similar in their virulence to H. coagulata under laboratory conditions. The genetic relatedness of the B. bassiana isolates also was compared using single sequence repeat (SSR) markers which showed genetic diversity of this species based on the source of the isolate. Some isolates were 4× more infectious than others demonstrating that virulence of B. bassiana is not necessarily associated with their genetic relatedness.

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