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Nematus Salicis
''Nematus'' is a genus of sawfly in the family Tenthredinidae. Some of its species, including ''Nematus leucotrochus'', ''Nematus olfaciens'' and ''Nematus ribesii'', eat the leaves of fruit bushes and trees, and can be serious pests. File:Nematus leuchotrochus 160529.jpg, ''Nematus leucotrochus'', pale-spotted gooseberry sawfly File:Nematus ribesii.jpg, ''Nematus ribesii'', common gooseberry sawfly File:Nematus spiraeae larva after last moult.jpg, ''Nematus spiraeae'' Sawfly (Nematus miliaris) larvae.jpg, ''Nematus miliaris'' File:Nematus P1170278a.jpg, File:Nematus P1170281a.jpg, File:Nematus P1170285a.jpg, See also * List of Nematus species This is a list of 156 species in the genus '' Nematus'', willow sawflies. ''Nematus'' species * ''Nematus abbotii'' (Kirby, 1882) * '' Nematus absconditus'' (Lindqvist, 1949) * '' Nematus acuminalis'' Vikberg, 1982 * '' Nematus alberich'' Benson ... References Tenthredinidae Agricultural pest insects Sawfly gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematus Oligospilus
''Nematus oligospilus'', commonly known as the willow sawfly, is a species of sawfly in the family Tenthredinidae. Native to central and northern Europe and Asia, it was first recorded in South America in the 1980s and New Zealand in 1997, and has also been introduced to Australia, South Africa and Lesotho. Its larvae feed on the leaves of various species of willow. Description An adult is between long. It is a slender insect with two pairs of membranous wings with black veins, the fore-wings having a yellow leading edge. The head bears a pair of long antennae, a pair of black compound eyes and three ocelli. The sides of the thorax are pale yellowish-brown while the dorsal surface is mid-brown. The abdomen is greenish and the legs are yellowish-brown at the base and darker brown near the clawed tips. The larva resembles a lepidopteran caterpillar; it has a white head with brown markings, a green body, three pairs of true legs near the front and seven pairs of pro-legs behind. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sawfly
Sawflies are the insects of the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay their eggs. The name is associated especially with the Tenthredinoidea, by far the largest superfamily in the suborder, with about 7,000 known species; in the entire suborder, there are 8,000 described species in more than 800 genera. Symphyta is paraphyletic, consisting of several basal groups within the order Hymenoptera, each one rooted inside the previous group, ending with the Apocrita which are not sawflies. The primary distinction between sawflies and the Apocrita – the ants, bees, and wasps – is that the adults lack a "wasp waist", and instead have a broad connection between the abdomen and the thorax. Some sawflies are Batesian mimics of wasps and bees, and the ovipositor can be mistaken for a stinger. Sawflies vary in len ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tenthredinidae
Tenthredinidae is the largest family of sawflies, with well over 7,500 species worldwide, divided into 430 genera. Larvae are herbivores and typically feed on the foliage of trees and shrubs, with occasional exceptions that are leaf miners, stem borers, or gall makers. The larvae of externally feeding species resemble small caterpillars. As with all hymenopterans, common sawflies undergo complete metamorphosis. The family has no easily seen diagnostic features, though the combination of five to nine antennal flagellomeres plus a clear separation of the first abdominal tergum from the metapleuron can reliably separate them. These sawflies are often black or brown, and 3 to 20 mm long. Like other sawflies, they lack the slender "wasp-waist", or petiole, between the thorax and abdomen, characteristic of many hymenopterans. The mesosoma and the metasoma are instead broadly joined. The Tenthredinidae are also often somewhat dorsoventrally flattened, which will distinguish them ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematus Leucotrochus
''Nematus leucotrochus'' is a species of sawfly in the family Tenthredinidae, known as the pale-spotted gooseberry sawfly. Widespread throughout central and northern Europe, this insect is best known as a pest of gooseberries. The larvae feed on the foliage of the plant, defoliating it. Unlike ''Nematus ribesii ''Nematus ribesii'' is a species of sawfly in the family Tenthredinidae. English names include common gooseberry sawflyTenthredinidae Agricultural pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematus Olfaciens
''Nematus'' is a genus of sawfly in the family Tenthredinidae. Some of its species, including ''Nematus leucotrochus'', '' Nematus olfaciens'' and ''Nematus ribesii'', eat the leaves of fruit bushes and trees, and can be serious pests. File:Nematus leuchotrochus 160529.jpg, ''Nematus leucotrochus'', pale-spotted gooseberry sawfly File:Nematus ribesii.jpg, ''Nematus ribesii ''Nematus ribesii'' is a species of sawfly in the family Tenthredinidae. English names include common gooseberry sawflyNematus spiraeae'' Sawfly (Nematus miliaris) larvae.jpg, ''Nematus miliaris'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematus Ribesii
''Nematus ribesii'' is a species of sawfly in the family Tenthredinidae. English names include common gooseberry sawflyGooseberry Sawfly. Royal Horticultural Society. and imported currantworm. Integrated Taxonomic Information System (ITIS). This insect is best known as a pest of . The larvae feed on the foliage of the plant, often defoliating it completely. Like all sawflies, this species is a |
Nematus Abbotii
''Nematus'' is a genus of sawfly in the family Tenthredinidae. Some of its species, including ''Nematus leucotrochus'', ''Nematus olfaciens'' and ''Nematus ribesii'', eat the leaves of fruit bushes and trees, and can be serious pests. File:Nematus leuchotrochus 160529.jpg, ''Nematus leucotrochus'', pale-spotted gooseberry sawfly File:Nematus ribesii.jpg, ''Nematus ribesii ''Nematus ribesii'' is a species of sawfly in the family Tenthredinidae. English names include common gooseberry sawflyNematus spiraeae'' Sawfly (Nematus miliaris) larvae.jpg, ''Nematus miliaris'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematus Spiraeae
''Nematus spiraeae'' is a species of sawfly in the family Tenthredinidae, known as the aruncus sawfly and sometimes the spiraea sawfly. It is native to central and northern Europe and was first recorded in Britain in 1924. Its larvae feed on the leaves of goat's beard (''Aruncus dioicus''). Description The adult aruncus sawfly is between long. The antennae, head and thorax are brownish-black and the abdomen yellowish-brown, the underside being paler than the upper side. The wings are membranous with brown veins and the tegulae are pale-coloured. Larvae grow to long; they are a translucent green and have short, pale hairs growing from low warts. The head is greenish-brown to brown. Eggs are capsule-shaped, white and about long. Life cycle Aruncus sawflies are all females, breeding by parthenogenesis. The adults emerge in late spring and eggs are laid on the underside of the leaves of goat's beard (''Aruncus dioicus'') shortly afterwards. Eggs hatch a week later, releasing g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Nematus Species
This is a list of 156 species in the genus '' Nematus'', willow sawflies. ''Nematus'' species * ''Nematus abbotii'' (Kirby, 1882) * '' Nematus absconditus'' (Lindqvist, 1949) * '' Nematus acuminalis'' Vikberg, 1982 * '' Nematus alberich'' Benson, 1934 * '' Nematus amaurus'' Vikberg, 1982 * '' Nematus angustiserra'' (Lindqvist, 1969) * '' Nematus appalachia'' Smith, 2004 * '' Nematus asper'' (Lindqvist, 1959) * '' Nematus aurantiacus'' Hartig, 1837 * '' Nematus bergamnni'' Dahlbom, 1835 * '' Nematus bergmanni'' Dahlbom, 1835 * '' Nematus bibartitus'' Serville, 1823 * '' Nematus bipartitus'' Serville, 1823 * '' Nematus bohemani'' Thomson, 1871 * '' Nematus boreophilus'' (Lindqvist, 1971) * '' Nematus breviseta'' (Lindqvist, 1949) * '' Nematus brevivalvis'' Thomson, 1871 * '' Nematus brunneus'' (Lindqvist, 1971) * '' Nematus cadderensis'' Cameron, 1875 * '' Nematus caeruleocarpus'' Hartig, 1837 * '' Nematus calais'' * '' Nematus capito'' (Konow, 1903) * '' Nematus carelicus'' Hellé ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural Pest Insects
A pest is any animal or plant harmful to humans or human concerns. The term is particularly used for creatures that damage crops, livestock, and forestry or cause a nuisance to people, especially in their homes. Humans have modified the environment for their own purposes and are intolerant of other creatures occupying the same space when their activities impact adversely on human objectives. Thus, an elephant is unobjectionable in its natural habitat but a pest when it tramples crops. Some animals are disliked because they bite or sting; snakes, wasps, ants, bed bugs, fleas and ticks belong in this category. Others enter the home; these include houseflies, which land on and contaminate food, beetles, which tunnel into the woodwork, and other animals that scuttle about on the floor at night, like cockroaches, which are often associated with unsanitary conditions. Agricultural and horticultural crops are attacked by a wide variety of pests, the most important being insects, mite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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