University of California

A new sharpshooter threatens both crops and ornamentals


Matthew J. Blua
Phil A. Phillips
Richard A. Redak

Authors Affiliations

M.J. Blua is Research Associate, Department of Entomology, UC Riverside; P.A. Phillips is Area IPM specialist, Ventura County; R.A. Redak is Associate Professor, Department of Entomology, UC Riverside.

Publication Information

Hilgardia 53(2):22-25. DOI:10.3733/ca.v053n02p22. March 1999.

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The glassy-winged sharpshooter (Homalodisca coagulata), an insect that has recently invaded California, and the smoke tree sharpshooter (Homalodisca lacerta) are creating serious new economic problems in both agricultural and ornamental plantings. The greatest threats surround their ability to spread the plant-pathogenic bacterium Xylella fastidiosa, which induces Pierce's disease in grapevines, almond leaf scorch disease, and a new disease known as oleander leaf scorch. Because of the potential distribution and large host range of the glassy-winged sharpshooter, other diseases caused by different strains of X. fastidiosa may have an even greater impact on the state's agricultural and ornamental landscape industries in the future.


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Blua M, Phillips P, Redak R. 1999. A new sharpshooter threatens both crops and ornamentals. Hilgardia 53(2):22-25. DOI:10.3733/ca.v053n02p22
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