Graphocephala confluens(GRCPCF)
Distribution details in United States of America (Washington)
Current pest situation evaluated by EPPO on the basis of information dated
1977: Present, no details
* Nielson MW (1968) The leafhopper vectors of phytopathogenic viruses (Homoptera, Cicadellidae): taxonomy, biology, and virus transmission. United States Department of Agriculture, Agricultural Research Service. Technical Bulletin 1382. 384 pp.
* USDA (1961) Cooperative Economic Insect Report 11(9), 114.
* Young DA (1977) Taxonomic study of the Cicadellinae (Homoptera, Cicadellidae) : Part 2. New World cicadellini and the genus Cicadella. Technical bulletin (North Carolina Agricultural Experiment Station) 239. 1135 pp.
* USDA (1961) Cooperative Economic Insect Report 11(9), 114.
* Young DA (1977) Taxonomic study of the Cicadellinae (Homoptera, Cicadellidae) : Part 2. New World cicadellini and the genus Cicadella. Technical bulletin (North Carolina Agricultural Experiment Station) 239. 1135 pp.
| Country | State | Status | |
|---|---|---|---|
| Canada | Present, restricted distribution | ||
| Canada | British Columbia | Present, no details | |
| Canada | Alberta | Present, no details |