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Planthopper
A planthopper is any insect in the infraorder Fulgoromorpha, in the suborder Auchenorrhyncha, a group exceeding 12,500 described species worldwide. The name comes from their remarkable resemblance to leaves and other plants of their environment and that they often "hop" for quick transportation in a similar way to that of grasshoppers. However, planthoppers generally walk very slowly. Distributed worldwide, all members of this group are plant-feeders, though surprisingly few are considered pests. The infraorder contains only a single superfamily, Fulgoroidea. Fulgoroids are most reliably distinguished from the other Auchenorrhyncha by two features; the bifurcate ("Y"-shaped) anal vein in the forewing, and the thickened, three-segmented antennae, with a generally round or egg-shaped second segment (pedicel) that bears a fine filamentous arista. Overview Planthoppers are laterally flattened and hold their broad wings vertically, in a tent-like fashion, concealing the sides of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flatidae
Flatidae are a family of fulgoroid planthoppers. They are cosmopolitan in distribution and are distinguished from others in the superfamily by a combination of characters. Like all other planthoppers, they suck phloem sap of plants. Some species are known to communicate with vibrations through the plant stems. Communication may be with mates, or with ants that tend the nymphs, protecting them and gathering honeydew secretions. Adults of some species have brightly coloured forewings which are tougher and known as tegmina unlike the membranous hindwings which are used for flight. Although a few can be identified by their coloration, most species requires dissection and examination under a microscope with access to literature on already described species. There are two sub-families within the family. In the subfamily Flatinae, the body of adults is flattened laterally and the tegmina are tent-like. In the Flatoidinae, the body is not laterally compressed and the tegmina are not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lethal Yellowing
Lethal yellowing (LY) is a phytoplasma disease that attacks many species of palms, including some commercially important species such as the coconut and date palm. In the Caribbean it is spread by the planthopper '' Haplaxius crudus'' (former name ''Myndus crudus'') which is native to Florida, parts of the Caribbean, parts of Australia and Central America. The only effective cure is prevention, i.e. planting resistant varieties of coconut palm and preventing a park-like or golf-course-like environment which attracts the planthopper. Some cultivars, such as the Jamaica Tall coconut cultivar, nearly died out because of lethal yellowing. Heavy turf grasses and similar green ground cover attracts the planthopper to lay its eggs there, and the nymphs develop at the roots of these grasses. The planthoppers' eggs and nymphs can pose a great threat to coconut-growing countries' economies, especially ones into which grass seeds for golf courses and lawns are imported from the Americas. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear
A gear is a rotating circular machine part having cut teeth or, in the case of a cogwheel or gearwheel, inserted teeth (called ''cogs''), which mesh with another (compatible) toothed part to transmit (convert) torque and speed. The basic principle behind the operation of gears is analogous to the basic principle of levers. A gear may also be known informally as a cog. Geared devices can change the speed, torque, and direction of a power source. Gears of different sizes produce a change in torque, creating a mechanical advantage, through their ''gear ratio'', and thus may be considered a simple machine. The rotational speeds, and the torques, of two meshing gears differ in proportion to their diameters. The teeth on the two meshing gears all have the same shape. Two or more meshing gears, working in a sequence, are called a gear train or a ''transmission''. The gears in a transmission are analogous to the wheels in a crossed, belt pulley system. An advantage of gears is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achilidae
Achilidae is a family of achilid planthoppers in the order Hemiptera. There are at least 160 genera and 520 described species in Achilidae. See also * List of Achilidae genera This is a list of 161 genera in the family Achilidae, achilid planthoppers. Achilidae genera * '' Abas'' * '' Achilla'' * '' Achilus'' * '' Acixiites'' * '' Acocarinus'' * ''Acus'' * '' Afrachilus'' * '' Agandecca'' * '' Akotropis'' * '' ... References Further reading * * * * * * * * * * * * External links * Auchenorrhyncha families Fulgoromorpha {{Fulgoromorpha-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanaloniidae
Acanaloniidae is a family of planthopper A planthopper is any insect in the infraorder Fulgoromorpha, in the suborder Auchenorrhyncha, a group exceeding 12,500 described species worldwide. The name comes from their remarkable resemblance to leaves and other plants of their environment ...s. It is sometimes treated as a subfamily of Issidae (as Acanaloniinae). Genera Genera include: *'' Acanalonia'' Spinola, 1839 *'' Aylaella'' Demir & Özdikmen, 2009 *'' Batusa'' Melichar, 1901 *'' Bulldolonia'' Gnezdilov, 2012 *'' Chlorochara'' Stål, 1869 *'' Notosimus'' Fennah, 1965 *'' Philatis'' Stål, 1862 References Auchenorrhyncha families Fulgoromorpha {{Planthopper-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auchenorrhyncha
The Auchenorrhyncha suborder of the Hemiptera contains most of the familiar members of what was called the "Homoptera" – groups such as cicadas, leafhoppers, treehoppers, planthoppers, and spittlebugs. The aphids and scale insects are the other well-known "Homoptera", and they are in the suborder Sternorrhyncha. Distributed worldwide, all members of this group are plant-feeders, and many are vectors of viral and fungal diseases of plants. It is also common for Auchenorrhyncha species to produce either audible sounds or substrate vibrations as a form of communication. Such calls range from vibrations inaudible to humans, to the calls of many species of cicadas that can be heard for hundreds of metres, at least. In season, they produce the most characteristic and ubiquitous noise of the bush. Etymology The word auchenorrhyncha is from the Greek αὐχήν, 'neck, throat' and ῥύγχος, 'snout'. Classification Debate and uncertainty as to whether the Auchenorrhy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achilixiidae
The Achilixiidae are a family of Fulgoromorpha (planthoppers); species may be found in the neotropical and Asian regions. Genera and species Two genera, each in its own subfamily, are known: Achilixiinae Auth.: Muir, 1923 - Malesia Malesia is a biogeographical region straddling the Equator and the boundaries of the Indomalayan and Australasian realms, and also a phytogeographical floristic region in the Paleotropical Kingdom. It has been given different definitions. ... * '' Achilixius'' Muir, 1923 ** '' Achilixius bakeri'' Wilson, 1989 ** '' Achilixius danaumoati'' Wilson, 1989 ** '' Achilixius davaoensi'' Muir, 1923 ** '' Achilixius fasciata'' Wilson, 1989 ** '' Achilixius fennahi'' Wilson, 1989 ** '' Achilixius irigae'' Wilson, 1989 ** '' Achilixius kolintangi'' Wilson, 1989 ** '' Achilixius mayoyae'' Wilson, 1989 ** '' Achilixius minahassae'' Wilson, 1989 ** '' Achilixius morowali'' Wilson, 1989 ** '' Achilixius muajati'' Wilson, 1989 ** '' Achilixius muiri'' Wil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emiliana (Hemiptera)
''Emiliana'' is an extinct genus of planthopper in the Tropiduchidae tribe Emilianini and containing the single species ''Emiliana alexandri''. The species is known only from the Middle Eocene Parachute Member, part of the Green River Formation, in the Piceance Creek Basin, Garfield County, northwestern Colorado, USA. History and classification ''Emiliana alexandri'' is known only from one fossil, the part and counterpart holotype, specimen number "PIN no. 4621/546". The specimen is composed of a single isolated tegmen which is preserved as a compression fossil in sedimentary rock. The fossil was recovered by David Kohls of Colorado Mountain College and A. P. Rasnitsyn of the Russian Academy of Sciences from outcrops of the Green River Formations Parachute Member exposed in the Anvil Points area of Garfield County, Colorado, USA. The type specimen is currently preserved in the paleoentomology collections housed in the Paleontological Institute, Russian Academy of Sciences, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplaxius Crudus
''Haplaxius crudus'' is a planthopper species in the genus '' Haplaxius''. ''H. crudus'' is the vector of the coconut lethal yellowing/16SrIV-A.Brown, S.E., Been, B.O. & McLaughlin, W.A. (2006). Detection and variability of the lethal yellowing group (16Sr IV) phytoplasmas in the ''Cedusa'' sp. (Hemiptera: Auchenorrhyncha: Derbidae) in Jamaica. ''Annals of Applied Biology'', 149(1), pp. 53–62 Range Throughout the Caribbean and in Florida. Hosts The nymphs are found on over 40 species of Poaceae and Cyperaceae in the Neotropical. In urban Florida habitats they prefer St. Augustine grass. Adults feed exclusively on the foliage of 30 species of Arecaceae. Adults seem to prefer ''Cocos nucifera'' but that may be due to observations being made around plantations, where surrounding grass provides a good combination of habitats for both nymphs and adults. Have been known since at least 1978 as the most common insect on ''C. nucifera'' in Florida and Jamaica. As a vector Ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honeydew (secretion)
Honeydew is a sugar-rich sticky liquid, secreted by aphids and some scale insects as they feed on plant sap. When their mouthpart penetrates the phloem, the sugary, high-pressure liquid is forced out of the anus of the aphid. Honeydew is particularly common as a secretion in hemipteran insects and is often the basis for trophobiosis. Some caterpillars of Lycaenidae butterflies and some moths also produce honeydew. Honeydew producing insects, like cicadas, pierce phloem ducts to access the sugar rich sap. The sap continues to bleed after the insects have moved on, leaving a white sugar crust called manna. Ants may collect, or "milk", honeydew directly from aphids and other honeydew producers, which benefit from their presence due to their driving away predators such as lady beetles or parasitic wasps—see ''Crematogaster peringueyi''. Animals and plants in a mutually symbiotic arrangement with ants are called Myrmecophiles. In Madagascar, some gecko species in the genera ''Phe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytoplasma
Phytoplasmas are obligate intracellular parasites of plant phloem tissue and of the insect vectors that are involved in their plant-to-plant transmission. Phytoplasmas were discovered in 1967 by Japanese scientists who termed them mycoplasma-like organisms. Since their discovery, phytoplasmas have resisted all attempts at ''in vitro'' culture in any cell-free medium; routine cultivation in an artificial medium thus remains a major challenge. Phytoplasmas are characterized by the lack of a cell wall, a pleiomorphic or filamentous shape, a diameter normally less than 1 μm, and a very small genome. Phytoplasmas are pathogens of agriculturally important plants, including coconut, sugarcane, and sandalwood, in which they cause a wide variety of symptoms ranging from mild yellowing to death. Phytoplasmas are most prevalent in tropical and subtropical regions. They are transmitted from plant to plant by vectors (normally sap-sucking insects such as leafhoppers) in which they both ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flatida Rosea
''Flatida rosea'', the flower-spike bug or the flatid leaf bug, is a species of planthopper in the family Flatidae. It is found in tropical dry forests in Madagascar, and the adult insects are gregarious, the groups orienting themselves in such a way that they resemble a flower spike. The adults have wide pink wings which they hold vertically in a tent-like fashion, concealing the whole body. The nymphs have no wings, but can move about, and are defensively covered in wispy white wax, with a plume of waxy tendrils. Like other bugs in this family, both adults and nymphs feed by piercing the bark with their mouthparts and sucking sap from the phloem. The adults are mobile, and can jump if disturbed. ''Flatida rosea'' feed on the liana '' Elachyptera minimiflora''. The nymphs produce copious quantities of honeydew and the Coquerel's coua Coquerel's coua (''Coua coquereli'') is a species of cuckoo in the family Cuculidae. It is endemic to Madagascar. Its habitat is subtropical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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