leafhopper

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leafhopper,

common name for small, wedge-shaped leaping insects, cosmopolitan in distribution, belonging to the family Cicadellidae, which comprises some 5,500 species of insects. Some are brightly colored and others are green to brown; they generally measure less than 1-4 in. (6 mm) in length. Leafhoppers, and the family as a whole, attack a wide range of trees, shrubs, grasses, and forbs. However, the nymphs and adults frequently suck the sap of only one or a few kinds of plants. Besides stunting plant growth by causing loss of sap, some leafhoppers introduce a toxin into the plant as they feed; others introduce disease organisms.

The potato leafhopper, Empoasca fabae, is a serious pest in the E United States. It causes a disease commonly known as hopperburn on potatoes and damages many other plants, including apples, beans, and clover. As a result of the potato leafhopper's attack, the leaf's conducting tissue is plugged; the plant leaves curl and begin to turn brown near the tip, and eventually the whole leaf appears blighted. As many as 5 to 6 million leafhoppers may be found per acre. Other leafhopper pests include the beet leafhopper, which causes the beet disease known as curly top in the W United States; the grape leafhopper; the rose leafhopper; and the apple leafhopper.

Many leafhoppers have a single generation per year, but there may be several. They overwinter either in the adult or egg stage, depending on the species. Eggs are laid singly or a few at a time in stems and leaves. The adults overwinter only in the south; those migrating north each year cause much damage, but are usually killed by the frost.

Leafhoppers are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Homoptera, family Cicadellidae.

leafhopper

[′lēf‚häp·ər]
(invertebrate zoology)
The common name for members of the homopteran family Cicadellidae.
References in periodicals archive ?
The corn leafhopper is broadly distributed in the Americas from the southern USA to Argentina (Triplehorn & Nault 1985).
In the spring of 2016, researchers, Vasseur Shi, Zeng Huang, Liu Hu et al, delved into studying how adult tea green leafhoppers behaviour changed with varying light conditions.
Previously chemosensory functions of such 'apical labial sensilla' have also been listed by Backus and McLean (1983) and Walker and Gordh (1989) in leafhoppers and whiteflies respectively.
Tamarisk leafhoppers and splendid tamarisk weevils were present in all sampling sites and across all months and years (Fig.
The presence of the first relatively low generation detected between the end of May and the beginning of June, coincides with the growth of the vegetative organs of the vine, in particular the exit of the young leaves which will be the home of the clutch of eggs by the adults emigrants of the neighbouring plots of land on which they had cultures considered as home of hibernation for the leafhoppers adults.
Leafhoppers transmit beet curly top virus during feeding.
Adult leafhoppers (Nephotettix virescens) were collected from the experimental plots of Directorate of Rice Research, Hyderabad.
Similarly, crepuscular flight activity has been reported for leafhoppers of the genus Dalbulus (Taylor et al.
Spray for potato leafhoppers in the alfalfa, cucumber beetles in the vines, com borers in the com, mites in the roses.
Acknowledgements: Infective Cicadulina mbila leafhoppers and Helminthosporium turcicum inocula were generously supplied by CIMMYT-Harare.
A group of noninfective leafhoppers were fed on healthy grapevines, Vitis vinifera cv.