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 ?
In Rahimyar Khan, ten hot spots of white fly, Jassid (11), armyworm (3) and Mealy Bug (2) were reported.
Comparative efficacy of new insecticides against whitefly, Bemisia tabaci(Genn.) and jassid, Amrasca devastans (Dist.) on Cotton, Bt-121.
However, number of jassid and thrips in nitenpyram and thiacloprid treated plots had non- significant difference between one another.
A study in Pakistan revealed 37.6% loss in yield of seed cotton by combined attack of thrips (14.6 individuals/leaf) and jassid (4.6 individuals/leaf) (Attique and Ahmad, 1990).
Number of adults and eggs of five types of sucking pests of cotton (white flies, jassid, mites, dusky bugs, and thrips) along with their predating insects like Chrysoperla, Geocoris and Argiope were recorded from experimental sites.
Similarly, the overall mean population of jassid was maximum (6.42/plant) at the student farm followed by the research farm (5.61/plant) and the nursery farm (1.89/plant).
The highest reduction of jassid (71.97%) was recorded followed by Neem oil (70.06%), Hing (Asafoetida) (68.15%) and Tobacco (23.56%) after 96 h., of application of pesticides.
Misrah &Senapati, (2003) reported that imidacloprid was effective against okra jassid. Akbar et al.
Performance of imidacloprid, thiomethoxam, acetamaprid and a biocontrol agent (Chrysoperla carnea) against whitefly, jassid and thrips on different cotton cultivars.
Jacobiascalybica (Bergevin & Zanon 1922) also noun by the common name Cotton Jassid, in profile it look like an orthoptera, is an endopterygota, also known as holometabola, class insecta, on order of Hemiptera, family of Cicadellidae and subfamily of Typhlocybinae[29], [30], which includes according to [27]small sized insects.