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 ?
There is very little movement of the jassid nymphs between leaves and they remain confined to plants where hatched (Mabbett et al.
devastans reached to economic threshold level of one jassid per leaf may cause considerable yield loss, leading to reduced quantity and deteriorated quality of transgenic Bt cotton.
The insect pest of cotton used for predation purpose was adult and nymphs of jassid, white flies and thrips.
Seasonal abundance of cotton jassid, Amrasca biguttula biguttula (Ishida) on okra.
The data on the population of jassid was present on jatropha plants during the entire period of experiment from 1st September, 2010 to 30th of May, 2011 as shown in (Table-2).
The reduction percentages of jassid population development during different periods and years varied significantly (F3,111 =2.
Field evaluation of some newer insecticides against Aphids (Aphis gossyph) and jassid (Amrasca biguttula biguttula) on okra.
The presence of wild, hosts or cultivated plants around the vine, The hot and wet periods of the year, An excess of nitrogen fertilization, are so many conditions favorable to the appearance of the infestations of the jassid.
he revealed that there was a significant increase in aphid, jassid and bollworm infestation because pests migrated from the early-planted crop to the later planted crop.
Effect of sowing dates, varieties and sulphur doses on incidence of Jassid, Empoasca terminalis Dist.
Whitefly and jassid populations are usually positively correlated with the temperature while negatively with relative humidity.