The older group name "physopoda" is with reference to the bladder like tips to the tarsi of the legs. Other common names for thrips include thunderflies, thunderbugs, storm flies, thunderblights, storm bugs, corn fleas, corn flies, corn lice, freckle bugs, harvest bugs, and physopods. Like some other animal names such as sheep, deer, and moose, in English the word thrips is both the singular and plural forms, so there may be many thrips or a single thrips. The generic and English name thrips is a direct transliteration of the ancient Greek θρίψ, thrips, meaning "woodworm". The first monograph on the group was published in 1895 by Heinrich Uzel who is considered the father of Thysanoptera studies. In 1836 the Irish entomologist Alexander Henry Haliday described 41 species in 11 genera and proposed the order name of Thysanoptera. Swedish entomologist Baron Charles De Geer described two species in the genus Physapus in 1744 and Linnaeus in 1746 added a third species and named this group of insects Thrips. The first recorded mention of thrips is from the 17th century and a sketch was made by Philippo Bonanni, a Catholic priest, in 1691. Their identification to species by standard morphological characteristics is often challenging. In addition to damaging plants, thrips may invade houses and infest household objects such as furniture, bedding and computer monitors – in the latter case by forcing their way in between the LCD and its glass covering. In the right conditions, such as in greenhouses, many species can exponentially increase in population size and form large swarms because of a lack of natural predators coupled with their ability to reproduce asexually, making them destructive to crops. Some species of thrips are beneficial as pollinators or as predators of other insects or mites. A few species serve as vectors for over 20 viruses that cause plant disease, especially the Tospoviruses. Many thrips species are pests of commercially important crops. They fly only weakly and their feathery wings are unsuitable for conventional flight instead, thrips exploit an unusual mechanism, clap and fling, to create lift using an unsteady circulation pattern with transient vortices near the wings. Entomologists have described approximately 6,000 species. Different thrips species feed mostly on plants by puncturing and sucking up the contents, although a few are predators. Thrips ( order Thysanoptera) are minute (mostly 1 mm long or less), slender insects with fringed wings and unique asymmetrical mouthparts. Tubulifera Phlaeothripidae † Rohrthripidae Terebrantia Adiheterothripidae Aeolothripidae Fauriellidae † Hemithripidae Heterothripidae † Jezzinothripidae † Karataothripidae Melanthripidae Merothripidae † Scudderothripidae Stenurothripidae Thripidae † Triassothripidae Uzelothripidae
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