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Jody Green, Ph.D.
Jarrell and fellow researchers from the Department of Entomology and Plant Pathology at
Oklahoma State University provide a comprehensive profile of Eastern grape leafhopper
in a new report published Monday in the Journal of Integrated Pest
Management.
Eastern grape leafhoppers overwinter as adults in leaf litter and debris, sometimes in the
crop and other times in the landscape adjacent to the vineyard. Leafhoppers become
active in the spring and feed on an extensive range of plants, weeds, and grasses before
finding and feeding on the new foliage of grapevines. Although they are able to thrive
feeding and mating on many other host plants, they are only known to oviposit (lay
eggs) on wild and cultivated grape.
Oviposition and feeding by nymphs and adults result in stippling of leaves, chlorosis
(loss of green coloration), early leaf drop, and stunting of affected shoots. Although
eastern grape leafhoppers do not feed on the fruit itself, indirect feeding over consecutive
seasons may result in permanent damage. Damage is also exacerbated by environmental
conditions that result in higher egg laying and therefore population growth. Jarrell says,
“The unsightliness of the insects’ excrement on grape berries, and the sooty mold that
grows as a result, also lowers the quality of the product.”
Oviposition and feeding by eastern grape leafhopper (Erythroneura comes) nymphs and adults result in stippling
of leaves (A); loss of green coloration, known as chlorosis (B); early leaf drop; and stunting of affected shoots.
Although eastern grape leafhoppers do not feed on the fruit itself, indirect feeding over consecutive seasons may
result in permanent damage. (Photos by Becky Carroll, Oklahoma State University; images originally published in
Jarrell et al 2020, Journal of Integrated Pest Management)
- 356 -
Jarrell and fellow researchers from the Department of Entomology and Plant Pathology at
Oklahoma State University provide a comprehensive profile of Eastern grape leafhopper
in a new report published Monday in the Journal of Integrated Pest
Management.
Eastern grape leafhoppers overwinter as adults in leaf litter and debris, sometimes in the
crop and other times in the landscape adjacent to the vineyard. Leafhoppers become
active in the spring and feed on an extensive range of plants, weeds, and grasses before
finding and feeding on the new foliage of grapevines. Although they are able to thrive
feeding and mating on many other host plants, they are only known to oviposit (lay
eggs) on wild and cultivated grape.
Oviposition and feeding by nymphs and adults result in stippling of leaves, chlorosis
(loss of green coloration), early leaf drop, and stunting of affected shoots. Although
eastern grape leafhoppers do not feed on the fruit itself, indirect feeding over consecutive
seasons may result in permanent damage. Damage is also exacerbated by environmental
conditions that result in higher egg laying and therefore population growth. Jarrell says,
“The unsightliness of the insects’ excrement on grape berries, and the sooty mold that
grows as a result, also lowers the quality of the product.”
Oviposition and feeding by eastern grape leafhopper (Erythroneura comes) nymphs and adults result in stippling
of leaves (A); loss of green coloration, known as chlorosis (B); early leaf drop; and stunting of affected shoots.
Although eastern grape leafhoppers do not feed on the fruit itself, indirect feeding over consecutive seasons may
result in permanent damage. (Photos by Becky Carroll, Oklahoma State University; images originally published in
Jarrell et al 2020, Journal of Integrated Pest Management)
- 356 -
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