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thrips
Thrips (order Thysanoptera) are minute, slender insects with fringed wings (thus the scientific name, from the Greek θύσανος ''thysanos'' ("fringe") + πτερόν ''pteron'' ("wing")).〔Tipping, C. (2008). Thrips (Thysanoptera). Pages 3769–3771 in ''Encyclopedia of Entomology'', John L. Capinera, ed. Springer, New York〕 Other common names for thrips include thunderflies, thunderbugs, storm flies, thunderblights, storm bugs, corn flies and corn lice. Thrips species feed on a large variety of plants and animals by puncturing them and sucking up the contents. A large number of thrips species are considered pests, because they feed on plants with commercial value. Some species of thrips feed on other insects or mites and are considered beneficial, while some feed on fungal spores or pollen. Approximately 6,000 species have been described. Thrips are generally tiny (1 mm long or less) and are not good flyers , although they can be carried long distances by the wind. In the right conditions, like indoor grow rooms or greenhouses, many species can exponentially increase in population size and form large swarms because of a lack of natural predators, making them an irritation to humans.
Like the words ''sheep'', ''deer'' and ''moose'', the word ''thrips'' is used for both the singular and plural forms, so there may be many thrips or a single thrips. The word ''thrips'' is from the Greek θρίψ, meaning "woodworm".〔
== Morphology and classification ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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