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 ?
One Jassid be considered equal to five white flies while assessing Jassid infestation.
It has been found that some species of aphid, whitefly, jassid & other harmful insect pests of cotton are highly resistant to insecticides & pesticides present now.
Jassid finds summer as conducive for its population growth and its intense attack causes leaf shedding and leaves signs of burns on the crop.
However, some areas in Sindh had been attacked by insects like bull worm while fly and Jassid were rapidly multiplying.
The agriculture scientist from Cotton Research Station (CRS) Multan said that farmers should take remedial measures to save the crop against the potential threat of attacks by Jassid (Sabz Taila), Mealy Bug and White Fly (Safaid Makhi), says a release issued by the media liaison unit of the Punjab agriculture department.
Cotton growers of Multan, Vehari, and tehsil Mailsi informed about attack by Jassid on cotton crop.